onEnterFrame (MX) HELP...why am I not getting this?!

1

OK, I apologize if this is stupid and lame, but I need HELP. Just about blind from this:

Here is my code, attached to a movie clip:

onClipEvent(load){
_y=13.1;
targety=-20.9
speed=5;
}

onClipEvent(enterFrame){
_y+=(targety-_y)/speed;
}

That’s great, it moves. And then it stops. And then it starts all over in the last frame.

I need some sort of If Else thing here, I think, to say “hey, once you’ve reached targety, please don’t go any further.” Somebody helped me out here a while back with a similar problem with alpha…only for some reason I can make the link in my logic to come up with the same thing for targety.

Please please help.

I really really need to finish this by midnight. (EST.).

Thanks in advance.

-B