Update app.py

app.py

@@ -76,9 +76,9 @@ def display_parameter_survey():
     <script>
         window.addEventListener("message", (event) => {{
             if (event.origin === "https://app.surveystack.io" && event.data.type === "SUBMISSION_SUBMIT_SUCCESS") {{
-                const payload = event.data.payload;
-                console.log("Submission ID:", payload);
-                window.huggingface.variables.mySubmissionData = payload; 
+                const data = event.data;
+                console.log("Submission ID:", data);
+                window.huggingface.variables.mySubmissionData = data; 
             }}
         }});
     </script>