health system problems

i have made a system, that allows me to kill my player in 2 ways, first one is that he falls of the world, and second when his enemy kills him! i have problems with the second part i have a health bar and when my player collides with his enemy the health bar will get smaller relative to the amount of killPoints. this is also working, but when the player is dead, the killPoints are still getting subtracted from my player. so he doesn't just loos 1 life. i made a vid showing my porb (sorry about the waterMark)!!: http://www.youtube.com/watch?v=UMfZJ8W_e0k