diff --git a/architecture/build.gradle.kts b/architecture/build.gradle.kts
index 429dbca..c500fce 100644
--- a/architecture/build.gradle.kts
+++ b/architecture/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -20,6 +22,7 @@ repositories {
 
 dependencies {
     compileOnly("org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -110,3 +113,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index 878fb99..e20f7a2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,7 +1,7 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    kotlin("jvm") version "1.9.0"
+    kotlin("jvm") version "1.9.20"
     id("io.codearte.nexus-staging") version "0.30.0"
 }
 
diff --git a/commands/build.gradle.kts b/commands/build.gradle.kts
index 544771a..c0f05ae 100644
--- a/commands/build.gradle.kts
+++ b/commands/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -22,6 +24,7 @@ dependencies {
     compileOnly("org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT")
     compileOnly(project(":extensions"))
     implementation(kotlin("reflect"))
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -120,4 +123,12 @@ tasks.shadowJar {
         }
     }
 
+}
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
 }
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/Command.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/Command.kt
index 19aa777..ef705ad 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/Command.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/Command.kt
@@ -21,7 +21,7 @@ interface Command {
      * @author itzRedTea
      * @since 1.0.0
      */
-    fun execute(invoker: ExecutorContext)
+    fun execute(context: ExecutorContext)
     /**
      * Invokes when command must be executed
      * @param sender who executes this command
@@ -34,10 +34,7 @@ interface Command {
     fun tabComplete(sender: CommandSender, args: Array<String>): List<String>
 
 
-    fun hasNotPermission(sender: CommandSender): Boolean =
-        context.permission != "" && (!sender.hasPermission(context.permission)).also {
-            if(it) MessagesService.byTag("#no-perm")(sender)
-        }
-
+    fun hasNotPermission(sender: CommandSender): Boolean = context.permission != ""
+            && (!sender.hasPermission(context.permission))
 }
 
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/DSLCommandArguments.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/DSLCommandArguments.kt
index 524e302..9062bca 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/DSLCommandArguments.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/DSLCommandArguments.kt
@@ -6,45 +6,39 @@ import org.bukkit.OfflinePlayer
 import org.bukkit.World
 import org.bukkit.entity.Player
 import tech.carcadex.kotlinbukkitkit.commands.exceptions.ArgumentNotFoundException
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.TypeParseException
-import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 
 fun ExecutorContext.string(index: Int): String = argument(index) ?: throw ArgumentNotFoundException(index)
 fun ExecutorContext.stringOrNull(index: Int): String? = argument(index)
 fun ExecutorContext.integer(index: Int): Int = try {
     argument(index)?.toInt()
 } catch (e: NumberFormatException) {
-    MessagesService.byTag("#not-a-number")(sender)
-    throw TypeParseException()
+    throw CommandExecuteException("#not-a-number")
 } ?: throw ArgumentNotFoundException(index)
 fun ExecutorContext.integerOrNull(index: Int): Int? = argument(index)?.toIntOrNull()
 
 fun ExecutorContext.double(index: Int): Double = try {
     argument(index)?.toDouble()
 } catch (e: NumberFormatException) {
-    MessagesService.byTag("#not-a-number")(sender)
-    throw TypeParseException()
+    throw CommandExecuteException("#not-a-number")
 } ?: throw ArgumentNotFoundException(index)
 fun ExecutorContext.doubleOrNull(index: Int): Double? = argument(index)?.toDoubleOrNull()
 
 fun ExecutorContext.materialOrNull(index: Int): Material? = Material.matchMaterial(string(index))
 fun ExecutorContext.material(index: Int): Material =
     materialOrNull(index) ?: run {
-        MessagesService.byTag("#no-such-material")(sender)
-        throw TypeParseException()
+        throw CommandExecuteException("#no-such-material")
     }
 fun ExecutorContext.worldOrNull(index: Int): World? = Bukkit.getWorld(argument(index) ?: "")
 fun ExecutorContext.world(index: Int): World =
     worldOrNull(index) ?: run {
-        MessagesService.byTag("#no-such-world")(sender)
-        throw TypeParseException()
+        throw CommandExecuteException("#no-such-world")
     }
 
 fun ExecutorContext.playerOrNull(index: Int): Player? = Bukkit.getPlayer(argument(index) ?: "")
 fun ExecutorContext.player(index: Int): Player =
     playerOrNull(index) ?: run {
-        MessagesService.byTag("#no-such-player")(sender)
-        throw TypeParseException()
+        throw CommandExecuteException("#no-such-player")
     }
 
 fun ExecutorContext.offlinePlayer(index: Int): OfflinePlayer = Bukkit.getOfflinePlayer(argument(index) ?: "")
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/ExecutorContext.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/ExecutorContext.kt
index cf9648f..620df94 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/ExecutorContext.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/ExecutorContext.kt
@@ -1,21 +1,13 @@
 package tech.carcadex.kotlinbukkitkit.commands.dsl
 
-import org.bukkit.Bukkit
-import org.bukkit.Material
-import org.bukkit.OfflinePlayer
-import org.bukkit.World
 import org.bukkit.command.CommandSender
 import org.bukkit.entity.Player
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.ArgumentNotFoundException
 import tech.carcadex.kotlinbukkitkit.commands.exceptions.NotPlayerException
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.TypeParseException
-import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
 
 class ExecutorContext(val sender: CommandSender, val args: Array<String>) {
     val player: Player
         get() {
             if (sender !is Player) {
-                MessagesService.byTag("#for-player-only")(sender)
                 throw NotPlayerException()
             }
             return sender
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/builder/CommandBuilder.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/builder/CommandBuilder.kt
index fbeb993..6ce2760 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/builder/CommandBuilder.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/builder/CommandBuilder.kt
@@ -1,17 +1,24 @@
 package tech.carcadex.kotlinbukkitkit.commands.dsl.builder
 
+import org.bukkit.command.CommandSender
 import org.bukkit.plugin.Plugin
 import tech.carcadex.kotlinbukkitkit.commands.dsl.Command
 import tech.carcadex.kotlinbukkitkit.commands.dsl.CommandContext
 import tech.carcadex.kotlinbukkitkit.commands.dsl.ExecutorContext
 import tech.carcadex.kotlinbukkitkit.commands.dsl.leaf.CommandLeaf
 import tech.carcadex.kotlinbukkitkit.commands.dsl.node.CommandNodeImpl
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 import tech.carcadex.kotlinbukkitkit.commands.exceptions.LeafCommandHasNotExecutorException
+import tech.carcadex.kotlinbukkitkit.commands.manager.CommandManagerInternal
+import tech.carcadex.kotlinbukkitkit.commands.manager.commandManager
+import tech.carcadex.kotlinbukkitkit.commands.manager.commandManagerInternal
 import tech.carcadex.kotlinbukkitkit.commands.register.CommandRegister
+import tech.carcadex.kotlinbukkitkit.commands.service.TabCompleteService
 
 class CommandBuilder(
     val context: CommandContext,
-    var tabComplete: Collection<String> = emptyList(),
+    val plugin: Plugin,
+    var tabComplete: List<(CommandSender) -> List<String>> = emptyList(),
     val subs: MutableMap<String, Command> = mutableMapOf(),
     var executor: (ExecutorContext.() -> Unit)? = null
 ) {
@@ -22,7 +29,7 @@ class CommandBuilder(
 }
 
 fun CommandBuilder.subCommand(name: String, permission: String, tabComplete: Collection<String>, invoke: CommandBuilder.() -> Unit) {
-    subs[name.lowercase()] = createCommand(name, permission, tabComplete, invoke)
+    subs[name.lowercase()] = plugin.createCommand(name, permission, tabComplete, invoke)
 }
 
 fun CommandBuilder.executor(executor: ExecutorContext.() -> Unit) {
@@ -30,38 +37,41 @@ fun CommandBuilder.executor(executor: ExecutorContext.() -> Unit) {
 }
 
 
-private fun createCommand(name: String, permission: String, tabComplete: Collection<String>, invoke: CommandBuilder.() -> Unit): Command {
-    val builder = CommandBuilder(CommandContext(name))
+private fun Plugin.createCommand(name: String, permission: String, tabComplete: Collection<String>, invoke: CommandBuilder.() -> Unit): Command {
+    val builder = CommandBuilder(CommandContext(name), this)
     builder.permission = permission
-    builder.tabComplete = tabComplete
+    builder.tabComplete = commandManagerInternal().tabCompleteService.parseTags(tabComplete.toList())
     builder.invoke()
     return createCommand(builder)
 }
 private fun createCommand(builder: CommandBuilder): Command {
     return if (builder.subs.isEmpty()) {
         if (builder.executor == null) throw LeafCommandHasNotExecutorException(builder.context.name)
-        CommandLeaf(builder.context, builder.executor!!, builder.tabComplete.toList())
+        CommandLeaf(builder.context, builder.executor!!, (builder.tabComplete.toList()))
     } else {
-        CommandNodeImpl(builder.context, builder.subs)
+        CommandNodeImpl(builder.context, builder.subs,
+            if(builder.executor != null) CommandLeaf(builder.context, builder.executor!!, builder.tabComplete) else null)
     }
 }
 
 fun Plugin.simpleCommand(name: String, permission: String, tabComplete: Collection<String>, executor: ExecutorContext.() -> Unit) {
-    val command = createCommand(CommandBuilder(CommandContext(name),
-        executor = executor).apply {
-            this.permission = permission
-            this.tabComplete = tabComplete
-    })
-    CommandRegister.register(this, { sender, _, _, args -> command.execute(ExecutorContext(sender, args)); true },
-        command.context.aliases, command.context.description, command.context.usage, { sender, _, _, args ->
-            command.tabComplete(sender, args)
-        }
-    )
+    registerCommand(createCommand(CommandBuilder(CommandContext(name),
+        executor = executor, plugin = this).apply {
+        this.permission = permission
+        this.tabComplete = commandManagerInternal().tabCompleteService.parseTags(tabComplete.toList())
+    }))
 }
 
 fun Plugin.command(name: String, permission: String, tabComplete: Collection<String>, invoke: CommandBuilder.() -> Unit) {
-    val command = createCommand(name, permission, tabComplete, invoke)
-    CommandRegister.register(this, { sender, _, _, args -> command.execute(ExecutorContext(sender, args)); true },
+    registerCommand(createCommand(name, permission, tabComplete, invoke))
+}
+
+private fun Plugin.registerCommand(command: Command) {
+    CommandRegister.register(this, { sender, _, _, args -> try {
+        command.execute(ExecutorContext(sender, args))
+    } catch (e: CommandExecuteException) {
+        commandManager().readMessage(e.messageTag)(sender)
+    }; true },
         command.context.aliases, command.context.description, command.context.usage, { sender, _, _, args ->
             command.tabComplete(sender, args)
         }
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/leaf/CommandLeaf.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/leaf/CommandLeaf.kt
index aec02fb..fe328a6 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/leaf/CommandLeaf.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/leaf/CommandLeaf.kt
@@ -5,21 +5,20 @@ import tech.carcadex.kotlinbukkitkit.commands.dsl.Command
 import tech.carcadex.kotlinbukkitkit.commands.dsl.CommandContext
 import tech.carcadex.kotlinbukkitkit.commands.dsl.ExecutorContext
 import tech.carcadex.kotlinbukkitkit.commands.exceptions.ArgumentNotFoundException
-import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
-import tech.carcadex.kotlinbukkitkit.commands.service.TabCompleteService
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 
 class CommandLeaf(
     override val context: CommandContext,
     private val executor: (ExecutorContext.() -> Unit),
-    completeTags: List<String> = emptyList()
+    private val completer: List<(CommandSender) -> List<String>>
 ) : Command {
-    private val completer = TabCompleteService.parseTags(completeTags)
     override fun execute(context: ExecutorContext) {
-        if(hasNotPermission(context.sender)) return
+        if(hasNotPermission(context.sender))
+            throw CommandExecuteException("#no-perm")
         try {
             executor(context)
         } catch (e: ArgumentNotFoundException) {
-            MessagesService.byTag("#wrong-usage")(context.sender)
+            throw CommandExecuteException("#wrong-usage")
         }
 
     }
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/node/CommandNodeImpl.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/node/CommandNodeImpl.kt
index 9385cc7..0d13e87 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/node/CommandNodeImpl.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/dsl/node/CommandNodeImpl.kt
@@ -5,13 +5,15 @@ import tech.carcadex.kotlinbukkitkit.commands.dsl.Command
 import tech.carcadex.kotlinbukkitkit.commands.dsl.CommandContext
 import tech.carcadex.kotlinbukkitkit.commands.dsl.CommandNode
 import tech.carcadex.kotlinbukkitkit.commands.dsl.ExecutorContext
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
 
 class CommandNodeImpl(
     override val context: CommandContext,
-    private val subs: MutableMap<String, Command> = mutableMapOf()
+    private val subs: MutableMap<String, Command> = mutableMapOf(),
+    private val default: Command? = null
 ) : CommandNode {
-    private var default: Command? = null
+
     override fun execute(context: ExecutorContext) {
         if(hasNotPermission(context.sender)) return
         if(context.args.isNotEmpty() && context.args[0].lowercase() in subs) subs[context.args[0].lowercase()]?.execute(
@@ -19,7 +21,7 @@ class CommandNodeImpl(
         else {
             if(default != null) {
                 default!!.execute(ExecutorContext(context.sender, context.args))
-            } else MessagesService.byTag("#wrong-usage")(context.sender)
+            } else throw CommandExecuteException("#wrong-usage")
         }
     }
 
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/CommandExecuteException.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/CommandExecuteException.kt
new file mode 100644
index 0000000..5a05bfa
--- /dev/null
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/CommandExecuteException.kt
@@ -0,0 +1,4 @@
+package tech.carcadex.kotlinbukkitkit.commands.exceptions
+
+open class CommandExecuteException(val messageTag: String) : RuntimeException() {
+}
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/NotPlayerException.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/NotPlayerException.kt
index 28d810b..9452b44 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/NotPlayerException.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/NotPlayerException.kt
@@ -1,6 +1,4 @@
 package tech.carcadex.kotlinbukkitkit.commands.exceptions
 
-import java.lang.RuntimeException
-
-class NotPlayerException : RuntimeException() {
+class NotPlayerException() : CommandExecuteException(messageTag = "#for-player-only") {
 }
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/TypeParseException.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/TypeParseException.kt
deleted file mode 100644
index 81dbe83..0000000
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/exceptions/TypeParseException.kt
+++ /dev/null
@@ -1,4 +0,0 @@
-package tech.carcadex.kotlinbukkitkit.commands.exceptions
-
-class TypeParseException() : RuntimeException() {
-}
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManager.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManager.kt
index 8f159ec..91bf1fd 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManager.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManager.kt
@@ -10,11 +10,18 @@ interface CommandManager {
     fun register(func: KFunction<Unit>)
     fun tabComplete(tag: String, func: (CommandSender) -> List<String>)
     fun message(tag: String, func: (CommandSender) -> Unit)
+    fun readMessage(tag: String): (CommandSender) -> Unit
 
     companion object {
+        private val registeredManagers = mutableMapOf<Plugin, CommandManager>()
         @JvmStatic
-        fun get(plugin: Plugin): CommandManager = CommandManagerImpl(plugin)
+        fun get(plugin: Plugin): CommandManager =
+            registeredManagers[plugin] ?: run {
+                registeredManagers[plugin] = CommandManagerInternal(plugin)
+                get(plugin)
+            }
     }
 }
 
-fun Plugin.commandManager(): CommandManager = CommandManagerImpl(this)
\ No newline at end of file
+fun Plugin.commandManager(): CommandManager = CommandManager.get(this)
+internal fun Plugin.commandManagerInternal(): CommandManagerInternal = CommandManager.get(this) as CommandManagerInternal
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerImpl.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerInternal.kt
similarity index 75%
rename from commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerImpl.kt
rename to commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerInternal.kt
index 5d1c26d..3bc10c9 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerImpl.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/manager/CommandManagerInternal.kt
@@ -4,26 +4,26 @@ import org.bukkit.command.CommandExecutor
 import org.bukkit.command.CommandSender
 import org.bukkit.command.TabCompleter
 import org.bukkit.plugin.Plugin
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.NotPlayerException
 import tech.carcadex.kotlinbukkitkit.commands.reflection.CommandParams
 import tech.carcadex.kotlinbukkitkit.commands.reflection.Parser
 import tech.carcadex.kotlinbukkitkit.commands.reflection.Parser.paramsFromAnnotations
 import tech.carcadex.kotlinbukkitkit.commands.reflection.annotations.Command
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.TypeParseException
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 import tech.carcadex.kotlinbukkitkit.commands.register.CommandRegister
 import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
 import tech.carcadex.kotlinbukkitkit.commands.reflection.service.SubCommandsService
 import tech.carcadex.kotlinbukkitkit.commands.service.TabCompleteService
 import kotlin.reflect.KFunction
 import kotlin.reflect.full.createType
+import kotlin.reflect.full.findAnnotations
 import kotlin.reflect.full.hasAnnotation
 import kotlin.reflect.full.isSubtypeOf
 import kotlin.reflect.jvm.javaType
 
-
-
-class CommandManagerImpl(private val plugin: Plugin) : CommandManager {
-
+class CommandManagerInternal(private val plugin: Plugin) : CommandManager {
+    val messagesService = MessagesService()
+    val tabCompleteService = TabCompleteService()
+    private val subCommandsService = SubCommandsService(messagesService, tabCompleteService)
     private fun register(
         commandExecutor: CommandExecutor, commandParams: CommandParams, tabCompleter: TabCompleter =
             TabCompleter { _, _, _, _ -> mutableListOf() }
@@ -39,10 +39,10 @@ class CommandManagerImpl(private val plugin: Plugin) : CommandManager {
     }
 
     override fun register(commandClass: Any) {
-        if(commandClass::class.objectInstance == null) {
-            throw IllegalArgumentException("commandClass is not a object!")
+        if((commandClass::class.findAnnotations(Command::class).isEmpty())) {
+            throw IllegalArgumentException("commandClass has not contains Command annotation!")
         }
-        val (name, subs) = SubCommandsService.registerRootCommand(commandClass)
+        val (name, subs) = subCommandsService.registerRootCommand(commandClass)
         val subsNames = mutableListOf<String>()
         subs.forEach {
             subsNames.addAll(it.context.aliases)
@@ -50,10 +50,10 @@ class CommandManagerImpl(private val plugin: Plugin) : CommandManager {
         val context = paramsFromAnnotations(commandClass::class)
         register(CommandExecutor { sender, _, _, args ->
             if (context.perm != null && !sender.hasPermission(context.perm)) {
-                MessagesService.byTag("#no-perm")(sender)
+                messagesService.byTag("#no-perm")(sender)
                 return@CommandExecutor true
             }
-            SubCommandsService.handleCommand(name, sender, args);
+            subCommandsService.handleCommand(name, sender, args);
             true
         },
             context,
@@ -87,19 +87,19 @@ class CommandManagerImpl(private val plugin: Plugin) : CommandManager {
 
             register(CommandExecutor { sender, _, _, argsFromExecutor ->
                 if (cmd.perm != null && !sender.hasPermission(cmd.perm)) {
-                    MessagesService.byTag("#no-perm")(sender)
+                    messagesService.byTag("#no-perm")(sender)
                     return@CommandExecutor true
                 }
                 try {
                     func.callBy(
-
                         Parser.paramMap(cmd, argsFromExecutor, argsSize, sender, argsParsers, func)
-
                     )
-                } catch (ignored: TypeParseException) {
-                } catch (ignored: NotPlayerException) {
+                } catch (e: CommandExecuteException) {
+                    messagesService.byTag(e.messageTag)(sender)
                 } catch (e: IllegalArgumentException) {
-                    MessagesService.byTag("#wrong-usage")(sender)
+                    messagesService.byTag("#wrong-usage")(sender)
+                } catch (e: Throwable) {
+                    messagesService.byTag("#unknown-error")(sender)
                 }
 
                 return@CommandExecutor true
@@ -107,20 +107,21 @@ class CommandManagerImpl(private val plugin: Plugin) : CommandManager {
             },
                 cmd,
                 cmd.completeTags.let {
-                    TabCompleteService.completerReflection(it.toMutableList(),
+                    tabCompleteService.completerReflection(it.toMutableList(),
                         func.parameters.map { it.type.javaType as Class<*> })
                 }
-                    ?: TabCompleter { _, _, _, _ -> mutableListOf() }
             )
         } else throw IllegalArgumentException("It must be a command!")
     }
 
     override fun tabComplete(tag: String, func: (CommandSender) -> List<String>) {
-        TabCompleteService.register(tag, func)
+        tabCompleteService.register(tag, func)
     }
 
 
     override fun message(tag: String, func: (CommandSender) -> Unit) {
-        MessagesService.register(tag, func)
+        messagesService.register(tag, func)
     }
+
+    override fun readMessage(tag: String): (CommandSender) -> Unit = messagesService.byTag(tag)
 }
\ No newline at end of file
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/Parser.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/Parser.kt
index c860600..fbd4fa6 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/Parser.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/Parser.kt
@@ -1,7 +1,7 @@
 package tech.carcadex.kotlinbukkitkit.commands.reflection
 
 import org.bukkit.command.CommandSender
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.TypeParseException
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 import tech.carcadex.kotlinbukkitkit.commands.exceptions.UnsupportedTypeException
 import tech.carcadex.kotlinbukkitkit.commands.reflection.annotations.*
 import tech.carcadex.kotlinbukkitkit.commands.service.MessagesService
@@ -59,19 +59,17 @@ object Parser {
                     try {
                         TypeService.byType(argType.type)(context)
                     } catch (e: Throwable) {
-                        if (context.errorMessage != null) MessagesService.byTag(context.errorMessage!!)(sender)
-                        throw TypeParseException()
+                        throw CommandExecuteException(context.errorMessage ?: "#empty")
                     }
                 }
             } else if (!clazz.isEnum) throw UnsupportedTypeException("Type ${argType.type.javaType.typeName} is not supported")
             else {
-                enums[argIndex] = { it, sender ->
+                enums[argIndex] = { it, _ ->
                     var res: Enum<*>? = null;
                     for (e in clazz.enumConstants) {
                         if ((e as Enum<*>).name.equals(it, ignoreCase = true)) res = e;
                     }
-                    if (res == null) MessagesService.byTag("#no-such-enum")(sender)
-                    res ?: throw TypeParseException()
+                    res ?: throw CommandExecuteException("#no-such-enum")
                 }
                 argsParsers.add { _, _ -> {} }
             }
@@ -102,8 +100,6 @@ object Parser {
         instanceAtStart: Boolean = false,
         instance: Any = Any()
     ): MutableMap<KParameter, Any?> {
-        val tempArgs = if (cmd.isLastOptional && argsFromExecutor.size < argsSize) argsFromExecutor.copyOf(argsSize)
-        else argsFromExecutor
 
         val finalArgs = mutableListOf<Any?>()
         if(instanceAtStart) finalArgs.add(instance)
@@ -113,7 +109,7 @@ object Parser {
                 )
             )
             finalArgs.add(sender)
-        finalArgs.addAll(tempArgs.mapIndexed { i, it ->
+        finalArgs.addAll(argsFromExecutor.mapIndexed { i, it ->
             if (it == null) return@mapIndexed null
             argsParsers[i + 1](it, sender)
         })
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/service/SubCommandsService.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/service/SubCommandsService.kt
index da40c61..ed16793 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/service/SubCommandsService.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/reflection/service/SubCommandsService.kt
@@ -9,12 +9,12 @@ import tech.carcadex.kotlinbukkitkit.commands.reflection.CommandParams
 import tech.carcadex.kotlinbukkitkit.commands.reflection.Parser
 import tech.carcadex.kotlinbukkitkit.commands.reflection.annotations.Command
 import tech.carcadex.kotlinbukkitkit.commands.reflection.annotations.Default
-import tech.carcadex.kotlinbukkitkit.commands.exceptions.TypeParseException
+import tech.carcadex.kotlinbukkitkit.commands.exceptions.CommandExecuteException
 import kotlin.reflect.KFunction
 import kotlin.reflect.full.*
 import kotlin.reflect.jvm.javaType
 
-object SubCommandsService {
+class SubCommandsService(private val messagesService: MessagesService, private val tabCompleteService: TabCompleteService) {
     data class SubCommand(val name: String, val context: CommandParams,
                           val executor: (sender: CommandSender, args: Array<String>) -> Boolean, val tabCompleter: TabCompleter)
 
@@ -44,7 +44,7 @@ object SubCommandsService {
             if(args.isNotEmpty()) for(sub in subs[rootCommand.lowercase()]!!) {
                 if(sub.name == args[0]) {
                     if (sub.context.perm != null && sub.context.perm != "" && !sender.hasPermission(sub.context.perm)) {
-                        MessagesService.byTag("#no-perm")(sender)
+                        messagesService.byTag("#no-perm")(sender)
                         return
                     }
                     sub.executor(sender, args.copyOfRange(1, args.size))
@@ -70,18 +70,18 @@ object SubCommandsService {
         }
         val executor: (sender: CommandSender, args: Array<String>) -> Boolean = { sender, argsFromExecutor ->
             if (context.perm != null && !sender.hasPermission(context.perm)) {
-                MessagesService.byTag("#no-perm")(sender)
+                messagesService.byTag("#no-perm")(sender)
                 true
             } else {
                 try {
                     func.callBy(Parser.paramMap(context, argsFromExecutor, argsSize, sender, argsParsers, func, true, rootCommand))
                     true
-                } catch (ignored: TypeParseException) {
+                } catch (ignored: CommandExecuteException) {
                     false
                 } catch (ignored: NotPlayerException) {
                     false
                 } catch (e: IllegalArgumentException) {
-                    MessagesService.byTag("#wrong-usage")(sender)
+                    messagesService.byTag("#wrong-usage")(sender)
                     false
                 }
 
@@ -89,7 +89,7 @@ object SubCommandsService {
         }
 
         return SubCommand(name, context, executor, context.completeTags.let {
-            TabCompleteService.completerReflection(it.toMutableList(),
+            tabCompleteService.completerReflection(it.toMutableList(),
                 func.parameters.map { it.type.javaType as Class<*> })
         }
             ?: TabCompleter { _, _, _, _ -> mutableListOf() })
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/MessagesService.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/MessagesService.kt
index 845e5b7..fb390fe 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/MessagesService.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/MessagesService.kt
@@ -3,7 +3,7 @@ package tech.carcadex.kotlinbukkitkit.commands.service
 import org.bukkit.ChatColor
 import org.bukkit.command.CommandSender
 
-object MessagesService {
+class MessagesService {
     private val messages = mutableMapOf<String, (CommandSender) -> Unit>()
 
     init {
@@ -15,7 +15,9 @@ object MessagesService {
         messages["#no-such-enum"] = { it.sendMessage("${ChatColor.RED}No such value for this enum was found") }
         messages["#not-a-number"] = { it.sendMessage("${ChatColor.RED}It is not a number") }
         messages["#wrong-usage"] = { it.sendMessage("${ChatColor.RED}Wrong usage of command") }
+        messages["#unknown-error"] = { it.sendMessage("${ChatColor.RED}Something went wrong") }
         messages["#no-perm"] = { it.sendMessage("${ChatColor.RED}You have not permissions for this command!") }
+        messages["#empty"] = { }
     }
 
     fun register(tag: String, func: (CommandSender) -> Unit) {
diff --git a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/TabCompleteService.kt b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/TabCompleteService.kt
index df2206d..3873db0 100644
--- a/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/TabCompleteService.kt
+++ b/commands/src/main/kotlin/tech/carcadex/kotlinbukkitkit/commands/service/TabCompleteService.kt
@@ -3,9 +3,8 @@ package tech.carcadex.kotlinbukkitkit.commands.service
 import org.bukkit.Bukkit
 import org.bukkit.command.CommandSender
 import org.bukkit.command.TabCompleter
-import kotlin.collections.ArrayList
 
-object TabCompleteService {
+class TabCompleteService {
     private val completes = mutableMapOf<String, (CommandSender) -> List<String>>()
     init {
         //REGISTER DEFAULT COMPLETES
diff --git a/exposed/build.gradle.kts b/exposed/build.gradle.kts
index e8c007f..37c643f 100644
--- a/exposed/build.gradle.kts
+++ b/exposed/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -29,6 +31,7 @@ dependencies {
     api(project(":extensions"))
     api(project(":utility"))
     compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -119,3 +122,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/extensions/build.gradle.kts b/extensions/build.gradle.kts
index 206a499..ec6c575 100644
--- a/extensions/build.gradle.kts
+++ b/extensions/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -21,6 +23,7 @@ repositories {
 dependencies {
     compileOnly("org.spigotmc:spigot-api:1.16.5-R0.1-SNAPSHOT")
     api(project(":architecture"))
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -111,3 +114,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/genref/build.gradle.kts b/genref/build.gradle.kts
index 9b3827e..4c447c1 100644
--- a/genref/build.gradle.kts
+++ b/genref/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -24,6 +26,7 @@ dependencies {
     implementation("com.google.devtools.ksp:symbol-processing-api:1.9.0-1.0.11")
     implementation("com.squareup:kotlinpoet:1.10.1")
     implementation("com.squareup:kotlinpoet-ksp:1.10.1")
+    implementation(kotlin("stdlib-jdk8"))
 
 }
 tasks.test {
@@ -114,3 +117,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/PluginVisitor.kt b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/PluginVisitor.kt
index 6f9e995..2fd8930 100644
--- a/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/PluginVisitor.kt
+++ b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/PluginVisitor.kt
@@ -15,6 +15,8 @@ import com.squareup.kotlinpoet.ksp.writeTo
 import tech.carcadex.kotlinbukkitkit.genref.plugin.annotations.OnDisable
 import tech.carcadex.kotlinbukkitkit.genref.plugin.annotations.Plugin
 import tech.carcadex.kotlinbukkitkit.architecture.KotlinPlugin
+import tech.carcadex.kotlinbukkitkit.genref.plugin.annotations.OnConfigReload
+import tech.carcadex.kotlinbukkitkit.genref.plugin.annotations.OnLoad
 import java.nio.file.Path
 import java.nio.file.Paths
 import kotlin.io.path.deleteIfExists
@@ -71,8 +73,9 @@ class PluginVisitor(private val codeGenerator: CodeGenerator,
     @OptIn(KspExperimental::class)
     override fun visitFunctionDeclaration(function: KSFunctionDeclaration, data: Unit) {
         if (function.getAnnotationsByType(OnDisable::class).any()) disable(function)
-
         if(function.getAnnotationsByType(Plugin::class).any()) enable(function)
+        if(function.getAnnotationsByType(OnConfigReload::class).any()) configReload(function)
+        if(function.getAnnotationsByType(OnLoad::class).any()) load(function)
     }
 
     fun disable(function: KSFunctionDeclaration) {
@@ -98,6 +101,29 @@ class PluginVisitor(private val codeGenerator: CodeGenerator,
             .build())
     }
 
+    fun load(function: KSFunctionDeclaration) {
+        funcs.add(FunSpec.builder("onPluginLoad")
+            .addCode(CodeBlock.of("""
+                            plugin = this
+                            ${function.simpleName.getShortName()}()
+                            
+                        """.trimIndent()))
+            .returns(Unit::class)
+            .addModifiers(KModifier.OVERRIDE)
+            .build())
+    }
+
+    fun configReload(function: KSFunctionDeclaration) {
+        funcs.add(FunSpec.builder("onConfigReload")
+            .addCode(CodeBlock.of("""
+                            plugin = this
+                            ${function.simpleName.getShortName()}()
+                            
+                        """.trimIndent()))
+            .returns(Unit::class)
+            .addModifiers(KModifier.OVERRIDE)
+            .build())
+    }
 
 }
 
diff --git a/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnConfigReload.kt b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnConfigReload.kt
new file mode 100644
index 0000000..7e802bd
--- /dev/null
+++ b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnConfigReload.kt
@@ -0,0 +1,5 @@
+package tech.carcadex.kotlinbukkitkit.genref.plugin.annotations
+
+@Target(AnnotationTarget.FUNCTION)
+@Retention(AnnotationRetention.SOURCE)
+annotation class OnConfigReload()
diff --git a/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnLoad.kt b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnLoad.kt
new file mode 100644
index 0000000..dc0a8ca
--- /dev/null
+++ b/genref/src/main/kotlin/tech/carcadex/kotlinbukkitkit/genref/plugin/annotations/OnLoad.kt
@@ -0,0 +1,5 @@
+package tech.carcadex.kotlinbukkitkit.genref.plugin.annotations
+
+@Target(AnnotationTarget.FUNCTION)
+@Retention(AnnotationRetention.SOURCE)
+annotation class OnLoad()
diff --git a/gradle.properties b/gradle.properties
index 3f3c255..4d8cbbe 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,18 +1,18 @@
-version=1.0.0.4-SNAPSHOT
+version=lastest
 
-signing.gnupg.executable=C:/Program Files (x86)/GnuPG/bin/gpg.exe
+signing.gnupg.executable=gpg.exe
 signing.gnupg.useLegacyGpg=false
-signing.gnupg.keyName=0D0AC475D4E1770131FF571149B3C697DD0584C4
-signing.gnupg.passphrase=ere112
+signing.gnupg.keyName=secret
+signing.gnupg.passphrase=secret
 
 
-ossrhUsername=itzRedTea
-ossrhPassword=Au~Ra~258+++
+ossrhUsername=secret
+ossrhPassword=secret
 
-nexusUsername=itzRedTea
-nexusPassword=Au~Ra~258+++
-sonatype.stagingProfileId=iRedTea
+nexusUsername=secret
+nexusPassword=secret
+sonatype.stagingProfileId=secret
 
-password=Au~Ra~258+++
+password=secret
 
 kotlin.code.style=official
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index aba097b..20cd5a1 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
\ No newline at end of file
diff --git a/menu/build.gradle.kts b/menu/build.gradle.kts
index 649e5aa..8dc8322 100644
--- a/menu/build.gradle.kts
+++ b/menu/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -25,6 +27,7 @@ dependencies {
     api(project(":extensions"))
     api(project(":utility"))
     compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -115,3 +118,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/messages/build.gradle.kts b/messages/build.gradle.kts
index 188cf0d..6cb31cd 100644
--- a/messages/build.gradle.kts
+++ b/messages/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -31,6 +33,7 @@ dependencies {
     implementation("net.kyori:adventure-api:4.14.0")
     implementation("net.kyori:adventure-platform-bukkit:4.3.0")
     implementation(files(parent!!.files("messages/libs/MiniMessages.jar"))) //using universal minimessages,
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -121,3 +124,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/serialization/build.gradle.kts b/serialization/build.gradle.kts
index 9019bb6..bef1fc4 100644
--- a/serialization/build.gradle.kts
+++ b/serialization/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -24,6 +26,7 @@ dependencies {
     api(project(":architecture"))
     api(project(":extensions"))
     compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -114,3 +117,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/src/main/kotlin/tech/carcadex/kotlinbukkitkit/KBKInfo.kt b/src/main/kotlin/tech/carcadex/kotlinbukkitkit/KBKInfo.kt
new file mode 100644
index 0000000..1670f12
--- /dev/null
+++ b/src/main/kotlin/tech/carcadex/kotlinbukkitkit/KBKInfo.kt
@@ -0,0 +1,5 @@
+package tech.carcadex.kotlinbukkitkit
+
+object KBKInfo {
+    const val KBK_VERSION = "1.0.0.3";
+}
\ No newline at end of file
diff --git a/thirdparty/build.gradle.kts b/thirdparty/build.gradle.kts
index 80b71cd..247c411 100644
--- a/thirdparty/build.gradle.kts
+++ b/thirdparty/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -24,6 +26,7 @@ dependencies {
     api(project(":architecture"))
     api(project(":utility"))
     compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -114,3 +117,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file
diff --git a/utility/build.gradle.kts b/utility/build.gradle.kts
index c47aef5..ec0c3b2 100644
--- a/utility/build.gradle.kts
+++ b/utility/build.gradle.kts
@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     id("java")
     kotlin("jvm")
@@ -24,6 +26,7 @@ dependencies {
     api(project(":architecture"))
     api(project(":extensions"))
     compileOnly("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
+    implementation(kotlin("stdlib-jdk8"))
 }
 
 tasks.test {
@@ -114,3 +117,11 @@ signing {
     useGpgCmd()
     sign(publishing.publications.getByName("maven"))
 }
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
\ No newline at end of file