How do I set a variable on the main timeline from within a symbol?

Question

Just getting started with Animate and coming to it from Flash, as may be apparent from my question. How do you set a variable to the main timeline from within a symbol?
I have 24 pairs of clickable elements, each in their own symbols, and all 24 of those symbols sit inside another symbol. I want all 24 to be able to set the same global variable when clicked. I can't find that this question is addressed anywhere, which makes me think I may be stuck in a Flash mindset and approaching the task in the wrong way. (There are however MANY discussions of how to address objects at different levels in the hierarchy. That's well covered.)
Relatedly, how do you access a function on the main timeline from within a symbol?
Adobe should consider putting together a support page (or pages) just for folks migrating form Flash. In the materials I've encountered so far there seems to be a studied effort to refrain from mentioning Flash in any way. I imagine there are a lot of people out there like me who have a deep background in Flash coding, but are just getting started with Animate. We don't need help with most of the basic concepts, but we may still have some pretty basic questions about how to accomplish some things in Animate because our Flash knowledge is getting in the way.

Answer 1

Hi Bill,
There are plenty of threads on here about scope, but here's one way to create a global variable:
// code on Stage.compositionReady
sym.myGlobalVar = 1;
Then, anywhere in your project, you can check/set that var like so:
sym.getComposition().getStage().myGlobalVar = 2;
And here's one way to create a global function:
// code on Stage.compositionReady
sym.myGlobalFunction = function(){
          console.log('myGlobalFunction');
Then, anywhere in your project, you can call that function like so:
sym.getComposition().getStage().myGlobalFunction();