diff --git a/box1/Assets/Script/DataManager.cs b/box1/Assets/Script/DataManager.cs
index e0abaf20..ee616231 100644
--- a/box1/Assets/Script/DataManager.cs
+++ b/box1/Assets/Script/DataManager.cs
@@ -3,6 +3,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using TTSDK;
+using TTSDK.UNBridgeLib.LitJson;
 using UnityEngine;
 
 public static class DataManager