Autohotkey question.

[CalmGamer]

I’d like a stand-alone emulator (fs uae) to receive an f12 key press when I press the exit button on my arcade (mapped to - and Esc). Would I have to do this within fs and look into remapping an Input key or would this be put into the autohotkey exit script?  I’ve tried the put a send f12 in there but that didn’t work. I’m not sure which app would receive the key event for the arcade exit button press.  

Thanks