How to highlight a range in a table?

Question

Google Apps Script

How to highlight a range in a table?
For a visual check of working with ranges, you need to select this range visually right away in the code.
I use this code

function ActivateRange() {
   var ss = SpreadsheetApp.getActive();
  var sheet = ss.getSheetByName('Продажи на Prom ua');
  var lr = sheet.getLastRow();
  sheet.getRange(1,3, lr, 5).activate();
}

But the range is allocated only after the function has completed, and in the course of the code the range is not allocated. How can I make the range allocated during the code execution, and not after the function has completed? And is it possible?

Answer 1

Try to useflush

function (){
  ... < proc > ...
  ActivateRange();
  SpreadsheetApp.flush();
  ... < proc > ...
}