Update Values in a Macro when Custom Widget Function is Called

[Jen I1]

I am attempting to pass values from a widget to the XML script of a Macro record.  These values would need to be passed and and received by the macro after the macro is executed.  I have seen the example code of "CustomEvent.observe()", but I am not sure if and how I could utilize this to observe a widget function call.  If utilizing CustomEvent isn't possible, is there another solution?

[-O-]

Can you elaborate a bit what a "Custom Widget Function" is?

(and what is the overall connection to App Engine Studio - where you posted the question)?