I've tested a countdown script and another https://forum.game-guru.com/thread/221016 in GameGuru Classic and they work well. In the first there is also a progress bar, and with the second the player can take items that add a bonus time. In GameGuru MAX these scripts don't work. I've seen this script for MAX: https://forum.game-guru.com/thread/207801?page=26#msg2634973
About you, is it possible to add the progress bar in this script for MAX and collecting items to add bonus time like in GameGuru Classic?