empty if no header

google-script.js

@@ -57,7 +57,7 @@ function doPost(e) {
     // 3. Map data to the (potentially updated) existingHeaders
     var row = existingHeaders.map(function(header) {
       var val = data[header];
-      if (val === undefined || val === null) return "N/A";
+      if (val === undefined || val === null) return "";
       if (typeof val === 'object') return JSON.stringify(val);
       return val;
     });