diff --git a/SpigotCore_Main/src/de/steamwar/command/SWCommand.java b/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
index 5488b18..d1bcdb1 100644
--- a/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
+++ b/SpigotCore_Main/src/de/steamwar/command/SWCommand.java
@@ -79,7 +79,7 @@ public abstract class SWCommand {
         });
 
         for (Method method : getClass().getDeclaredMethods()) {
-            addMapper(Mapper.class, method, i -> i != 0, false, TypeMapper.class, (anno, typeMapper) -> {
+            addMapper(Mapper.class, method, i -> i == 0, false, TypeMapper.class, (anno, typeMapper) -> {
                 if (anno.local()) {
                     localTypeMapper.put(anno.value(), typeMapper);
                 } else {
@@ -89,7 +89,7 @@ public abstract class SWCommand {
             addMapper(ClassMapper.class, method, i -> i != 0, false, TypeMapper.class, (anno, typeMapper) -> {
                 SWCommandUtils.addMapper(anno.value().getTypeName(), typeMapper);
             });
-            add(Register.class, method, i -> i != 2, true, null, (anno, parameters) -> {
+            add(Register.class, method, i -> i == 2, true, null, (anno, parameters) -> {
                 if (!anno.help()) {
                     return;
                 }
@@ -103,7 +103,7 @@ public abstract class SWCommand {
             });
         }
         for (Method method : getClass().getDeclaredMethods()) {
-            add(Register.class, method, i -> i == 0, true, null, (anno, parameters) -> {
+            add(Register.class, method, i -> i > 0, true, null, (anno, parameters) -> {
                 if (anno.help()) {
                     return;
                 }
@@ -135,7 +135,7 @@ public abstract class SWCommand {
         }
 
         Parameter[] parameters = method.getParameters();
-        if (parameterTester.test(parameters.length)) {
+        if (!parameterTester.test(parameters.length)) {
             return;
         }
         if (firstParameter && !CommandSender.class.isAssignableFrom(parameters[0].getType())) {