Animated Rollover Actionscript PlaySlideNum last slide?

Hello everyone.  I'm making an animated menu Flash movie that connects to two different presentations (2 modules).  I've always had trouble with the 2nd hyperlink connecting to the 2nd slide again, which sends it to the first module, even though I want it to go to the third slide that will take it to the second module.  I hope that makes sense.  So, when I did a nonanimated menu, I'd have to have the 2nd hyperlink just link to the last slide rather than a specific slide number.  I need to do this with this animated Flash movie, but I didn't know if there was a way in the code to say that you need the button to go to the last slide of the presentation rather than a specific number.

my code is:

_level0.ArtAPI.PlaySlideNum(3);

Any code that says go to last slide instead of a number?