Get datas with "," from a google sheet

[TIMAI2]

Try a script like this:

function doGet() {
  //get data from sheet
  var ss = SpreadsheetApp.getActive();
  var sh = ss.getSheetByName("Sheet1");
  var values = JSON.stringify(sh.getDataRange().getValues());
  return ContentService.createTextOutput(values);  
}

then blocks:

The json structure gets lost in the cells and on the way, and has to be reformed in the blocks