Animate 2019 / 2020 actionscript - looping issue

Hi, 

I'm using this actionscript below to stop animation in Animate 2019:

if (!this.loop)
this.loop = 1;
if (this.loop++ == 3)
createjs.Ticker.removeEventListener('tick', stage);

After updating to Animate 2020 this script isn't working any more. I would appreciate any help 🙂

Br / Preben