Update app.py

app.py

@@ -88,8 +88,13 @@ def display_data_survey():
         // Listen for messages from the iframe
         window.addEventListener("message", (event) => {{
             console.log("Received message from iframe:", event.data);
+            // Get the payload 
+            const submissionData = JSON.stringify(event.data);
+            document.getElementById('submissionData').innerText = submissionData;
+            window.parent.updateSubmission(submissionData);
         }});
     </script>
+    <div id="submissionData" style="display:none;"></div>
     """
     return iframe_html