function question

[KLoWnXXX]

i made a function that says

function tracks(mc) {
	duplicateMovieClip(_root.mc, "MC"+i, 1000+i);
	_root["MC"+i]._x=_root.car._x;
	_root["MC"+i]._y=_root.car._y;
	_root["MC"+i]._rotation = _root.car._rotation;
	_root.i += 1;
}

the mc movieclip is a dirt track that should be made by the car when it drives up, this is what i have for the car.

onClipEvent(enterFrame){
	_root.carSpeed = 7;
	if(this._y > 0){
		if(Key.isDown(Key.UP)){
			_root.car._y -= _root.carSpeed;
			_root.car._rotation = 0;
			tracks(mc);  //right here is where i want to call that function, but i dunno how >_<
		}
	}
}

i tried calling it with "tracks(mc)" but i never really used functions (i really want to start to use them tho), and i tried reading the NG AS tutorials, but i couldnt make much sense out of them.
seeing as how this is a simple problem, i figure someone out there must be able to help me call that function, or fix any errors in this script

thanks guys

[Denvish]

Basically if the function is on the main timeline, you need to call _root.tracks()

The parameter you're sending/recieving (mc) doesn't actually appear to be necessary, as it's not referenced in the function (unless as _root.mc, which would probably need to be _root[mc] instead

Hopefully that makes some kind of sense

[KLoWnXXX]

thanks for that, but now something else about it isnt working.

its probably the fact that its on a "enterFrame" thing, but the track mc just sits under my car and follows it wherever. However if i make a button that calls track whenever i click it, it creates the track under my car and the track just sits there, which is what i want.
any help?

[KLoWnXXX]

wow nevermind i forgot to declare i as 1.. my bad.

where'd i leave that key.