[FlashMX][AS2]Need help with platform for my game. LOOK AT THE FILE!

i need help. The character who falls when you test the movie is supposed to stop on the ground, can someone see what i need to do?? i can’t figure it out! i’ve tried multiple ways(about 8 i think) and none of em see to work. PLease, if you have nothing to do, see if you can make it work!! ty so much if you do.