need help with a small peice of actionscript

[helpmeplz]

life = 100;
onEnterFrame = function () {
if (life<=0) {
this.removeMovieClip();
}
life_txt.text = life;
};

i have this code inside an enemy mc on it's first and only frame and i know that it's life is getting lower via what im reading off of life_txt but for some reason the mc wont remove itself when it's life is below 0.

[alillm]

Did you attach the movie clip in the first place? removeMovieClip() wont work unless you attached it in the first place.

Ali

[helpmeplz]

Did you attach the movie clip in the first place? removeMovieClip() wont work unless you attached it in the first place.

Ali

lol. i didn't. thanks