How to make my game charactor Jump!!

Hi guys Pls help me about this I want to know how to make my charactor jumping from keyboard I tried anything my code don't show error box it's can run any process but my keycode not working I press any key but it's can't jump Now my time is gradually decreasing. Because I have to hurry and submit my game The one who knows, please help me. T T

PS. I use the program Adobe Flash Professional CC and CS6 I have tried ActionScript2.0 , 3.0 both  I'm not sure if its working the same or not.