diff --git a/python_api/api.py b/python_api/api.py
index e806aeb..4816458 100644
--- a/python_api/api.py
+++ b/python_api/api.py
@@ -340,25 +340,30 @@ async def predict(request: PredictRequest):
      
     # experiment_id=create_expriement( cur, conn)
 
-    trail= get_trial_by_model_and_input( model_id, inputs)
-    # print(trail)
+    trial= get_trial_by_model_and_input( model_id, inputs)
+    if not experiment_id:
+        cur,conn=get_db_cur_con()
+        experiment_id=create_expriement(cur, conn)
 
+
+    # print(trail)
+    # if trail[2]
     # print("trial")
-    if trail and trail[2] is not None:
+    if trial: #existing trial
         # print(trail[2])
-        experiment_id = trail[0]
+        
         cur,conn=get_db_cur_con()
-        trial_id = trail[1]
+        source_trial = trial
         
         model=get_model_by_id(model_id,cur,conn)
-        if not experiment_id:
-            experiment_id=create_expriement(cur, conn)
+        new_trial_id=create_trial( model_id, experiment_id, cur, conn,source_trial)
+        # if not experiment_id:
+        #     experiment_id=create_expriement(cur, conn)
 
-        return {"experimentId": experiment_id, "trialId": trial_id, "model_id": model["name"], "input_url": inputs}
+        return {"experimentId": experiment_id, "trialId": new_trial_id, "model_id": model["name"], "input_url": inputs}
     else:
         cur,conn=get_db_cur_con()
-        if not experiment_id:
-            experiment_id=create_expriement(cur, conn)
+
         # create a new trial and generate a new uuid experiment
         # cur,conn=get_db_cur_con()
         
@@ -396,9 +401,11 @@ async def delete_trial(trial_id: str):
 @app.get("/trial/{trial_id}")
 async def get_trial(trial_id: str):
     cur,conn=get_db_cur_con()
+    
     cur.execute("""
             SELECT t.id AS trial_id,
                 t.result,
+                t.source_trial_id as source_trial,
                     t.completed_at,
                     ti.url AS input_url,
                     m.id AS modelId,
@@ -443,7 +450,10 @@ async def get_trial(trial_id: str):
     row = cur.fetchone()
 
     if not row:
-        raise Exception(f"No trial found with ID {trial_id}")
+        # raise Exception(f"No trial found with ID {trial_id}")
+        return None
+    if row["source_trial"] is not None:
+        return get_trial(row["source_trial"])
     # print(row)
     # Prepare the response structure
     result = {
diff --git a/python_api/db.py b/python_api/db.py
index cf33538..a39cfbb 100644
--- a/python_api/db.py
+++ b/python_api/db.py
@@ -30,9 +30,9 @@ def close_db_cur_con(cur, conn):
     cur.close()
     conn.close()
 
-def create_trial( model_id, experiment_id, cur, conn):
+def create_trial( model_id, experiment_id, cur, conn,source_id="",completed_at=None):
     trial_id= str(uuid.uuid4())
-    cur.execute("INSERT INTO trials (id,model_id,created_at,updated_at ,experiment_id) VALUES (%s,%s,%s,%s, %s) RETURNING id", (trial_id,model_id,   datetime.now(),   datetime.now()  , experiment_id))
+    cur.execute("INSERT INTO trials (id,model_id,created_at,updated_at,completed_at,experiment_id,source_trial_id) VALUES (%s,%s,%s,%s,%s,%s,%s) RETURNING id", (trial_id,model_id,   datetime.now(),   datetime.now()  ,datetime.now()  , experiment_id,source_id))
     conn.commit()
     return trial_id
 
@@ -123,7 +123,7 @@ def get_trial_by_model_and_input(model_id, input_urls):
 
         # Assuming the columns are returned in the order you expect
         # You may need to adjust this depending on your database schema
-        return (trial['experiment_id'], trial['trial_id'], trial['completed_at'])
+        return (trial['trial_id'])
 
 
     except (Exception, psycopg2.DatabaseError) as error: