Need help playing 2 SWFs in sequence

Question

I have two SWFs that I want to play in sequence, using a
third SWF (that has nothing besides this code). This should be
simple -- play the first, wait for its timeline to end, then play
the second. Problem is I can't get the timeline to wait.
To load the first movie in frame 1, I have this, which works:
this.createEmptyMovieClip("mcHolder", 1);
var oListener:Object = new Object();
var mclLoader:MovieClipLoader = new MovieClipLoader();
mclLoader.loadClip("first movie.swf", mcHolder);
mclLoader.addListener(oListener);
In frame 10, I want to unload the first, then load the
second. That happens, but w/o waiting. Here's what I have, so far:
stop();
if (_level1.currentFrame == _level1.totalFrames) {
// unload first movie
mclLoader.unloadClip(mcHolder);
// now load next movie
this.createEmptyMovieClip("mcHolder2", 1);
var oListener2:Object = new Object();
var mclLoader2:MovieClipLoader = new MovieClipLoader();
mclLoader2.loadClip("second movie.swf", mcHolder2);
mclLoader2.addListener(oListener2);
I suppose there's something wrong with my If statement, but
what?

Answer 1

So other than the fact that my code was riddled with errors,
it was fine!
After implementing your instructions, I created an interval
that runs the if-then statement 10x a second, then cleared the
interval immediately after the If statement.
One more question, though: the reason I was unloading the
first movie was to clear up some memory. Are you saying that isn't
necessary, since I'm now loading the second movie into a higher
level?