Unable to execute an if function

1

Hi, I’m trying to call this function from another one but for some reason it on executes the first trace but does not go into the if statement. Can some one please give me a hand on this, I greatly appreciate it, Thank you.

function goAndFade(target_mc) {
trace(“im new function”);
this.onEnterFrame = function() {
if(target_mc._alpha < 100) {
trace(“I’m in loop”);
target_mc._alpha = target_mc._alpha + 20;
trace("alphe @ : " + target_mc._alpha);
}else delete this.onEnterFrame;
}
}