I have a simple Google Form that collects data, and, using AppScript, sends confirmation emails to users who fill it out. After user submits the form, on confirmation, s/he
I don't think we have access to what that value is through the Spreadsheet API (which means Apps Script doesn't have it either). The closest I can think of would be the "key" value in this feed. You'd have to test to find out though. There's no other alternative that I know of other than accessing the Spreadsheet API directly. So first, you'd have to get the last row through the api use ?reverse=true&max-results=1