diff --git a/SpigotCore_Main/src/de/steamwar/command/SWCommand.java b/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
index 240766b..72cda65 100644
--- a/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
+++ b/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
@@ -130,7 +130,7 @@ public abstract class SWCommand {
                     if (mapper != null) {
                         name = mapper.value();
                     }
-                    if (!SWCommandUtils.MAPPER_FUNCTIONS.containsKey(name)) {
+                    if (!SWCommandUtils.MAPPER_FUNCTIONS.containsKey(name) && !localTypeMapper.containsKey(name)) {
                         Bukkit.getLogger().log(Level.WARNING, "The parameter '" + parameter.toString() + "' is using an unsupported Mapper of type '" + name + "'");
                         return;
                     }
diff --git a/SpigotCore_Main/src/de/steamwar/command/SubCommand.java b/SpigotCore_Main/src/de/steamwar/command/SubCommand.java
index 1ce4c11..343cbd0 100644
--- a/SpigotCore_Main/src/de/steamwar/command/SubCommand.java
+++ b/SpigotCore_Main/src/de/steamwar/command/SubCommand.java
@@ -101,37 +101,41 @@ class SubCommand {
     }
 
     List<String> tabComplete(CommandSender commandSender, String[] args) {
-        if (varArgType == null && args.length < arguments.length + subCommand.length - 1) {
+        if (varArgType == null && args.length > arguments.length + subCommand.length) {
             return null;
         }
+        int index = 0;
         List<String> argsList = new LinkedList<>(Arrays.asList(args));
         for (String value : subCommand) {
             String s = argsList.remove(0);
             if (argsList.isEmpty()) return Collections.singletonList(value);
             if (!value.equalsIgnoreCase(s)) return null;
+            index++;
         }
         for (TypeMapper<?> argument : arguments) {
             String s = argsList.remove(0);
             if (argsList.isEmpty()) return argument.tabCompletes(commandSender, Arrays.copyOf(args, args.length - 1), s);
             try {
-                if (argument.map(Arrays.copyOf(args, argsList.size()), s) == null) {
+                if (argument.map(Arrays.copyOf(args, index), s) == null) {
                     return null;
                 }
             } catch (Exception e) {
                 return null;
             }
+            index++;
         }
         if (varArgType != null && !argsList.isEmpty()) {
             while (!argsList.isEmpty()) {
                 String s = argsList.remove(0);
                 if (argsList.isEmpty()) return arguments[arguments.length - 1].tabCompletes(commandSender, Arrays.copyOf(args, args.length - 1), s);
                 try {
-                    if (arguments[arguments.length - 1].map(Arrays.copyOf(args, argsList.size()), s) == null) {
+                    if (arguments[arguments.length - 1].map(Arrays.copyOf(args, index), s) == null) {
                         return null;
                     }
                 } catch (Exception e) {
                     return null;
                 }
+                index++;
             }
         }
         return null;