OK. Thanks again. Stupid question, but isn't 1+1 a calculation?

I need to be able to assign an Action/Macro to every 'correct' answer, so that an addition occurs, and on the final slide, it will give me a total.
I just tried this . . .
I clicked a button that had the 'AddToTally' macro assigned. I then clicked another link that had the 'ShowTally' macro assigned.
A message box appeared, saying "Your final score is 0" (obviously should've been 1).