diff --git a/src/aeros_simulation/schema.py b/src/aeros_simulation/schema.py
index 9b06fce..f29e605 100644
--- a/src/aeros_simulation/schema.py
+++ b/src/aeros_simulation/schema.py
@@ -28,6 +28,7 @@ class SimulationInput(DefultBase):
     AhmJobId: Optional[str] = Field(None, max_length=50)
     deratings: Optional[List[dict]] = []
     maintenance_outages: Optional[List[dict]] = []
+    CallbackWorkflowId: Optional[str] = Field(None, max_length=100)
 
 class SimulationNode(DefultBase):
     id: UUID
diff --git a/temporal/workflow.py b/temporal/workflow.py
index 3f5b2c7..47cd05e 100644
--- a/temporal/workflow.py
+++ b/temporal/workflow.py
@@ -1,10 +1,11 @@
 from datetime import timedelta
 from temporalio import workflow
-
+from temporalio.client import Client
+import os
 with workflow.unsafe.imports_passed_through():
     from temporal.activity import calculate_plant_eaf_activity, execute_simulation_activity, update_contribution_bulk_mappings_activity, update_equipment_for_simulation_activity,call_callback_ahm, acquire_lock, release_lock,execute_update_node
 
-
+TEMPORAL_URL = os.environ.get("TEMPORAL_URL", "http://192.168.1.86:7233")
 
 @workflow.defn
 class SimulationWorkflow:
@@ -64,8 +65,8 @@ class SimulationWorkflow:
             sim_data["HubCnnId"],
             start_to_close_timeout=timedelta(days=1)
         )
-        
-        
+
+
         if sim_data.get("AhmJobId"):
             await workflow.execute_activity(
                 call_callback_ahm,
@@ -79,9 +80,21 @@ class SimulationWorkflow:
         self.status = "COMPLETED"
         # etc…
         self.isDone = True
+
         await workflow.execute_activity(
             release_lock,
             sim_data["HubCnnId"],
             start_to_close_timeout=timedelta(minutes=10),
         )
+        
+        if sim_data.get("CallbackWorkflowId"):
+            client = await Client.connect(TEMPORAL_URL)
+            handle = client.get_workflow_handle(sim_data["CallbackWorkflowId"])
+
+            await handle.signal("notify_done", {
+                "simulation_id": sim_data["HubCnnId"],
+                "status": "success"
+            })
+
+
         return sim_data["HubCnnId"]  # simulation_id