AS2 Looping Through To See What MC Clicked?

I have many movieclips on stage, let's say 100.Rather than setting onRelease or OnPress function for each one, is there any way of looping through all the movie clips (maybe if they were called MC1 MC2 MC3 MC4 etc etc), using an array, to see which one was pressed and then say what should happen if so and so MC was pressed.

Depending on which MC is pressed a variable will be a different number... e.g. MC1 pressed means variableA = 1, MC1 pressed means variableA = 2, MC1 pressed means variableA = 3 etc

I just thought there would be a more intelligent solution than writing out this 100's of times: MC[numberOfMC].onPress = function() { do something };