diff --git a/SpigotCore_Main/src/de/steamwar/command/SWCommandUtils.java b/SpigotCore_Main/src/de/steamwar/command/SWCommandUtils.java
index 3c3f9b1..d2fbc45 100644
--- a/SpigotCore_Main/src/de/steamwar/command/SWCommandUtils.java
+++ b/SpigotCore_Main/src/de/steamwar/command/SWCommandUtils.java
@@ -32,7 +32,7 @@ import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
-class SWCommandUtils {
+public class SWCommandUtils {
 
     private SWCommandUtils() {
         throw new IllegalStateException("Utility Class");
@@ -62,30 +62,9 @@ class SWCommandUtils {
 
     static {
         addMapper(boolean.class, Boolean.class, createMapper(Boolean::parseBoolean, s -> Arrays.asList("true", "false")));
-        addMapper(float.class, Float.class, createMapper(Float::parseFloat, s -> {
-            try {
-                Float.parseFloat(s);
-                return Collections.singletonList(s);
-            } catch (NumberFormatException e) {
-                return Collections.emptyList();
-            }
-        }));
-        addMapper(double.class, Double.class, createMapper(Double::parseDouble, s -> {
-            try {
-                Double.parseDouble(s);
-                return Collections.singletonList(s);
-            } catch (NumberFormatException e) {
-                return Collections.emptyList();
-            }
-        }));
-        addMapper(int.class, Integer.class, createMapper(Integer::parseInt, s -> {
-            try {
-                Integer.parseInt(s);
-                return Collections.singletonList(s);
-            } catch (NumberFormatException e) {
-                return Collections.emptyList();
-            }
-        }));
+        addMapper(float.class, Float.class, createMapper(Float::parseFloat, numberCompleter(Float::parseFloat)));
+        addMapper(double.class, Double.class, createMapper(Double::parseDouble, numberCompleter(Double::parseDouble)));
+        addMapper(int.class, Integer.class, createMapper(Integer::parseInt, numberCompleter(Integer::parseInt)));
         MAPPER_FUNCTIONS.put(String.class.getTypeName(), createMapper(s -> s, Collections::singletonList));
         MAPPER_FUNCTIONS.put(StringBuilder.class.getTypeName(), createMapper(StringBuilder::new, Collections::singletonList));
         MAPPER_FUNCTIONS.put(Player.class.getTypeName(), createMapper(Bukkit::getPlayer, s -> {
@@ -127,7 +106,7 @@ class SWCommandUtils {
         }
     }
 
-    public static Object[] generateArgumentArray(TypeMapper<?>[] parameters, String[] args, boolean varArgs, String[] subCommand) {
+    static Object[] generateArgumentArray(TypeMapper<?>[] parameters, String[] args, boolean varArgs, String[] subCommand) {
         Object[] arguments = new Object[parameters.length + 1];
         int index = 0;
         while (index < subCommand.length) {
@@ -174,6 +153,17 @@ class SWCommandUtils {
         };
     }
 
+    private static Function<String, List<String>> numberCompleter(Function<String, ?> mapper) {
+        return s -> {
+            try {
+                mapper.apply(s);
+                return Collections.singletonList(s);
+            } catch (Exception e) {
+                return Collections.emptyList();
+            }
+        };
+    }
+
     static <T extends Annotation> T getAnnotation(Method method, Class<T> annotation) {
         if (method.getAnnotations().length != 1) return null;
         return method.getAnnotation(annotation);