diff --git a/src/main/kotlin/net/hareworks/kommandlib/main.kt b/src/main/kotlin/net/hareworks/kommandlib/main.kt
index b950b4e..12fbd98 100644
--- a/src/main/kotlin/net/hareworks/kommandlib/main.kt
+++ b/src/main/kotlin/net/hareworks/kommandlib/main.kt
@@ -70,10 +70,6 @@ abstract class Argument(
 ) {
   val routes = routes.toMap()
   var name: String = ""
-    get() = field
-    protected set(value) {
-      field = value
-    }
   var permission: String = ""
     set(value) {
       field = value
@@ -81,7 +77,9 @@ abstract class Argument(
       for ((_, route) in routes) {
         route.permission = value + "." + route.name
       }
+      println("permission setted to $value")
     }
+    var condition: (CommandSender) -> Boolean = { true }
 
   init {
     for ((name, route) in routes) {
@@ -100,7 +98,7 @@ abstract class Argument(
   fun getCompletList(sender: CommandSender, args: Array<String>): List<String> {
     return routes
         .values
-        .filter { sender.hasPermission(it.permission) }
+        .filter { sender.hasPermission(it.permission) && it.condition(sender) }
         .map { it.suggest(sender, args) }
         .flatten()
   }
@@ -120,7 +118,7 @@ class Route(vararg routes: Pair<String, Argument>, execute: (CommandSender, Arra
   }
 
   override fun suggest(sender: CommandSender, args: Array<String>): List<String> {
-    return if (sender.hasPermission(this.permission) && this.name.startsWith(args.last()))
+    return if (sender.hasPermission(this.permission) && this.condition(sender) && this.name.startsWith(args.last()))
         listOf(this.name)
     else listOf()
   }