diff --git a/BauSystem_Main/src/de/steamwar/bausystem/configplayer/serializer/ConfigurationSerializableSerializer.java b/BauSystem_Main/src/de/steamwar/bausystem/configplayer/serializer/ConfigurationSerializableSerializer.java
index 50599ff8..de0ad78e 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/configplayer/serializer/ConfigurationSerializableSerializer.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/configplayer/serializer/ConfigurationSerializableSerializer.java
@@ -21,11 +21,13 @@ package de.steamwar.bausystem.configplayer.serializer;
 
 import org.bukkit.configuration.serialization.ConfigurationSerializable;
 import org.bukkit.configuration.serialization.ConfigurationSerialization;
+import yapion.hierarchy.api.groups.YAPIONAnyType;
 import yapion.hierarchy.types.YAPIONObject;
 import yapion.serializing.api.SerializerObject;
 import yapion.serializing.data.DeserializeData;
 import yapion.serializing.data.SerializeData;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -49,7 +51,14 @@ public class ConfigurationSerializableSerializer extends SerializerObject<Config
         yapionObject.add(TYPE_IDENTIFIER, type().getTypeName());
         Map<String, Object> serializeDataMap = serializeData.object.serialize();
         serializeDataMap.forEach((s, o) -> {
-            yapionObject.add(s, serializeData.serialize(o));
+            YAPIONAnyType yapionAnyType = serializeData.serialize(o);
+            if (yapionAnyType instanceof YAPIONObject) {
+                YAPIONObject object = (YAPIONObject) yapionAnyType;
+                if (object.containsKey(TYPE_IDENTIFIER) && object.getPlainValue(TYPE_IDENTIFIER).equals("com.google.common.collect.RegularImmutableList")) {
+                    object.put(TYPE_IDENTIFIER, ArrayList.class.getTypeName());
+                }
+            }
+            yapionObject.add(s, yapionAnyType);
         });
         return yapionObject;
     }
diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/hotbar/DefaultHotbar.java b/BauSystem_Main/src/de/steamwar/bausystem/features/hotbar/DefaultHotbar.java
index abbec165..23ed1665 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/hotbar/DefaultHotbar.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/hotbar/DefaultHotbar.java
@@ -20,71 +20,57 @@
 package de.steamwar.bausystem.features.hotbar;
 
 import de.steamwar.bausystem.configplayer.Config;
-import org.bukkit.configuration.file.YamlConfiguration;
+import lombok.experimental.UtilityClass;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
+import yapion.hierarchy.types.YAPIONArray;
+import yapion.hierarchy.types.YAPIONObject;
+import yapion.hierarchy.types.YAPIONValue;
+import yapion.parser.YAPIONParser;
+import yapion.serializing.YAPIONDeserializer;
+import yapion.serializing.YAPIONSerializer;
 
-import java.io.StringReader;
-
-// TODO: 16.05.2021 @Yoyo muss mal was Fixen, dann Item Save auf Yapion umstellen
+@UtilityClass
 public class DefaultHotbar {
 
-    public static void updateHotbar(Player p) {
+    private final YAPIONArray DEFAULT_HOTBAR = YAPIONParser.parse("{[{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)v(2230)type(WOODEN_AXE)meta{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)meta-type(UNSPECIFIC)display-name(WorldEdit Wand)lore{@type(java.util.ArrayList)values[Left click: select pos #1,Right click: select pos #2]}}},{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)v(2230)type(COMPASS)meta{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)meta-type(UNSPECIFIC)display-name(Navigation Wand)lore{@type(java.util.ArrayList)values[Left click: jump to location,Right click: pass through walls]}}},null,null,null,null,null,null,{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)v(2230)type(NETHER_STAR)meta{@type(org.bukkit.configuration.serialization.ConfigurationSerializable)meta-type(UNSPECIFIC)display-name(§eBau GUI)}}]}").getArray("");
+
+    public void updateHotbar(Player p) {
         ItemStack[] hotbar = new ItemStack[9];
         System.arraycopy(p.getInventory().getContents(), 0, hotbar, 0, 9);
-        YamlConfiguration configuration = new YamlConfiguration();
-        configuration.set("Items", hotbar);
-        Config.getInstance().get(p).add("hotbar", configuration.saveToString());
+        YAPIONArray yapionArray = new YAPIONArray();
+        for (ItemStack itemStack : hotbar) {
+            if (itemStack != null) {
+                yapionArray.add(YAPIONSerializer.serialize(itemStack));
+            } else {
+                yapionArray.add(new YAPIONValue<>(null));
+            }
+        }
+        Config.getInstance().get(p).add("hotbar", yapionArray);
         Config.getInstance().save(p);
     }
 
-    public static void setHotbar(Player p) {
+    public void setHotbar(Player p) {
         ItemStack[] hotbar = getItems(p);
         ItemStack[] inv = p.getInventory().getContents();
         System.arraycopy(hotbar, 0, inv, 0, 9);
         p.getInventory().setContents(inv);
     }
 
-    public static ItemStack[] getItems(Player p) {
-        YamlConfiguration hb = YamlConfiguration.loadConfiguration(new StringReader(Config.getInstance().get(p).getPlainValueOrDefault("hotbar", defaultHotbar())));
-        ItemStack[] hotbar = hb.getList("Items").toArray(new ItemStack[9]);
+    public ItemStack[] getItems(Player p) {
+        YAPIONArray yapionArray = Config.getInstance().get(p).getYAPIONArrayOrSetDefault("hotbar", defaultHotbar());;
+        ItemStack[] hotbar = new ItemStack[9];
+        yapionArray.forEach((integer, yapionAnyType) -> {
+            if (yapionAnyType instanceof YAPIONValue) {
+                hotbar[integer] = null;
+            } else {
+                hotbar[integer] = (ItemStack) YAPIONDeserializer.deserialize((YAPIONObject) yapionAnyType);
+            }
+        });
         return hotbar;
     }
 
-    public static String defaultHotbar() {
-        return "Items:\n" +
-                "- ==: org.bukkit.inventory.ItemStack\n" +
-                "  v: 2230\n" +
-                "  type: WOODEN_AXE\n" +
-                "  meta:\n" +
-                "    ==: ItemMeta\n" +
-                "    meta-type: UNSPECIFIC\n" +
-                "    display-name: WorldEdit Wand\n" +
-                "    lore:\n" +
-                "    - 'Left click: select pos #1'\n" +
-                "    - 'Right click: select pos #2'\n" +
-                "- ==: org.bukkit.inventory.ItemStack\n" +
-                "  v: 2230\n" +
-                "  type: COMPASS\n" +
-                "  meta:\n" +
-                "    ==: ItemMeta\n" +
-                "    meta-type: UNSPECIFIC\n" +
-                "    display-name: Navigation Wand\n" +
-                "    lore:\n" +
-                "    - 'Left click: jump to location'\n" +
-                "    - 'Right click: pass through walls'\n" +
-                "- null\n" +
-                "- null\n" +
-                "- null\n" +
-                "- null\n" +
-                "- null\n" +
-                "- null\n" +
-                "- ==: org.bukkit.inventory.ItemStack\n" +
-                "  v: 2230\n" +
-                "  type: NETHER_STAR\n" +
-                "  meta:\n" +
-                "    ==: ItemMeta\n" +
-                "    meta-type: UNSPECIFIC\n" +
-                "    display-name: §eBau GUI\n";
+    public YAPIONArray defaultHotbar() {
+        return DEFAULT_HOTBAR;
     }
 }