I created a form in Google Script and one of the fields is a Checkbox, the name of the field would be field1 []

and to save the answers in a sheet, I am using AppendRow, but when I insert the name of the field that has [], I get an error, and if I remove them the selections are not saved correctly.

This is my code.gs

function doGet(request) {
  return HtmlService.createTemplateFromFile('Index')

function include(filename) {
  return HtmlService.createHtmlOutputFromFile(filename)

/* @Process Form */
function processForm(formObject) {
  var url = "https://docs.google.com/spreadsheets/d/12CUQaajvhcQjcskDgA7YHc6EWdK67wq9LqBiauBoi4/edit#gid=0";
  var ss = SpreadsheetApp.openByUrl(url);
  var ws = ss.getSheetByName("Data");

  • Welcome to Web Applications. There are missing details, more specifically the Index.html file (add a minimal, complete and verifiable version). – Rubén Apr 19 at 19:04


That looks fine, provided that the HTML form includes an input with that exact name, as in <input name="field1">.

when I insert the name of the field that has []

If you really have a form input field whose name attribute is something like field1[], you should probably choose a different name. If you cannot change the name attribute for some reason, try this in your server-side code:


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