Calling a function based on variable's value

say I want to declare a global variable in my main movie on a mouse event (button) and give it a value “functionA”.

then I want to load an external .swf into a clip (with the same mouse event)

then I want some code in the loaded .swf to execute a function of the same name “functionA”

how would I code this?

this way I could load the same .swf but execute different functions depending on which button triggered the load… comprende?

hope that makes sense… once I figure this out i will feel like i can actually make some stuff happen…