diff --git a/UiToolkit/MultiSelectChips/MultiSelectChips.cs b/UiToolkit/MultiSelectChips/MultiSelectChips.cs
index aee960e..0d14905 100644
--- a/UiToolkit/MultiSelectChips/MultiSelectChips.cs
+++ b/UiToolkit/MultiSelectChips/MultiSelectChips.cs
@@ -1,11 +1,11 @@
 #if ADDRESSABLES && UI_ELEMENTS
 using UnityEngine;
 using UnityEngine.UIElements;
-using UnityEngine.AddressableAssets;
-using UnityEngine.ResourceManagement.AsyncOperations;
 using System;
 using System.Collections;
 using System.ComponentModel;
+using UnityEngine.AddressableAssets;
+using UnityEngine.ResourceManagement.AsyncOperations;
 
 public class MultiSelectChips : VisualElement
 {
diff --git a/UiToolkit/NEG_UiToolkit.asmdef b/UiToolkit/NEG_UiToolkit.asmdef
new file mode 100644
index 0000000..ed497ad
--- /dev/null
+++ b/UiToolkit/NEG_UiToolkit.asmdef
@@ -0,0 +1,28 @@
+{
+    "name": "NEG_UiToolkit",
+    "rootNamespace": "",
+    "references": [
+        "Unity.Addressables",
+        "Unity.ResourceManager"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [
+        {
+            "name": "com.unity.addressables",
+            "expression": "",
+            "define": "ADDRESSABLES"
+        },
+        {
+            "name": "com.unity.modules.uielements",
+            "expression": "",
+            "define": "UI_ELEMENTS"
+        }
+    ],
+    "noEngineReferences": false
+}
\ No newline at end of file
diff --git a/UiToolkit/NEG_UiToolkit.asmdef.meta b/UiToolkit/NEG_UiToolkit.asmdef.meta
new file mode 100644
index 0000000..dcbd343
--- /dev/null
+++ b/UiToolkit/NEG_UiToolkit.asmdef.meta
@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 7ff6afcd64a25ab4497e324400b59140
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: