How can I use a custom js file to specify link destinations?

Question

If I use a rectangle to create a button (name "ExitRight"), I specify the button action in a click script. So, to go to a web page using the click script, I enter:
window.location= " window.location="https://www.google.com/";
This works fine and if I look in the edgeAction.js file I find:
//Edge symbol: 'engine_anim'
   (function(symbolName) {  
      Symbol.bindElementAction(compId, symbolName, "${_ExitRight}", "click", function(sym, e) {
         // insert code for mouse click here
         window.location="https://www.google.com/";
      //Edge binding end
   })("mySymbol");
   //Edge symbol end
Now, what I really want to do is be able to change the destination the button takes me to by using a global variable to specify the destination:
something like...
window location = myDestination;
...where myDestination is a global created in  an external custom js document loaded in to the script library
Just putting...
myDestination = "https://www.google.com/";
...into the external js doc doesn't work. So how can I accomplish this?
Peter Small

Answer 1

It must be summer vacation time. Questions are not being answered and this is the third question that I've had to find out the answer for myself.
The solution I found (from a post by hemanth kumar r https://forums.adobe.com/thread/1479495) was to make variables and functions properties of AdobeEdge.
So in the external .js document a variable is declared and given a value:
AdobeEdge.myVariableName = "The variable value";
To use it in a symbol/element:
alert(AdobeEdge.myVariableName);
And a function is declared:
AdobeEdge.myFunctionName(param){...function code...} //param optional
To call these in a symbol/element:
AdobeEdge.myFunctionName(param);
Peter Small