How to handle Multi-Thread Operations/ Isolates in Flutterflow?

My problem is actually pretty simple.

I have several pages in my app. On one page there is a timer, that should play a sound after a given time.

I want this to work also when i am on another page, that does not have the timer on it. In my particular scenario it would not make sense to pass the data and start a seperate timer on the next page when navigating to it.

So in order to persist the timer an get notified even when i am on another page i would need some kind of Multi- Thread or Background-Service, right? I think in Flutter you could solve this by instatiating an isolate.

Is there a way to solve this Problem in Flutterflow? If yes, how?

Thanks for any help!