diff --git a/Assets/Scripts/Core/UndoManager.cs b/Assets/Scripts/Core/UndoManager.cs
index c9b9f08..d05cffc 100644
--- a/Assets/Scripts/Core/UndoManager.cs
+++ b/Assets/Scripts/Core/UndoManager.cs
@@ -21,6 +21,11 @@ public static class ActionHistory
 
     public static Stack<HistoryItem> History = new Stack<HistoryItem>();
 
+    public static void Push(ActionType type, MonoBehaviour handler, int extra = 0)
+    {
+        History.Push(new HistoryItem { Type = type, Handler = handler, ExtraInt = extra });
+    }
+
     public static bool TryUndoLast()
     {
         if (History.Count == 0) return false;