diff --git a/comfy/photoshop_instance.py b/comfy/photoshop_instance.py
index 10831d3..17a960c 100644
--- a/comfy/photoshop_instance.py
+++ b/comfy/photoshop_instance.py
@@ -102,8 +102,11 @@ class PhotoshopInstance:
         self.comfyui_last_value_tracker = {}
     
     # for apis calls
-    def is_ps_history_changed(self):
-        current_id = self.get_active_history_state_id_from_remote()
+    async def is_ps_history_changed(self, sio):
+        result = await sio.call('get_active_history_state_id', data={}, to=self.sid)
+        if result is None:
+            return False
+        current_id = result.get('history_state_id', None)
         return self.get_img_state_id != current_id and self.get_img_state_id < current_id
 
     # for nodes calls
diff --git a/comfy/sdppp.py b/comfy/sdppp.py
index a447629..4362f24 100644
--- a/comfy/sdppp.py
+++ b/comfy/sdppp.py
@@ -97,14 +97,13 @@ class SDPPP:
                 }, to=sid)
 
         @sio.event
-        def check_changes(sid):
-            # instance = self.get_ps_instance()
-            # if instance is None:
-            #     return
-            # if not instance.is_ps_history_changed():
-            #     return
-            # sio.emit('trigger_graph_change', to=sid)
-            pass
+        async def check_changes(sid):
+            instance = self.get_ps_instance()
+            if instance is None:
+                return
+            if not await instance.is_ps_history_changed(sio):
+                return
+            sio.emit('trigger_graph_change', to=sid)
         
         @sio.event
         def reset_changes(sid):