Showing progress in Google scripts [duplicate]

Question

I want to show progress of a lengthy script to the user. Ideally I want to use the yellow toast that comes up saying running script cancel dismiss when running a Google script

I know u can throw custom error but how can throw custom messages to this yellow box.

Or another alternative will do as well. Not msgbox as that stops the script.

Answer 1

I ended up using the spreadsheet class of toast:

SpreadsheetApp.getActiveSpreadsheet().toast('message')