getTimer() and duplicateMovieClip()

[tox0tes]

I am trying to duplicate a movieclip 2 seconds after the movie started playing, but with the following code, it keeps duplicating infinitely. I only want one duplicate to be created. How would I do this?

Code: Select all

  
timeElapsed=getTimer();

if (timeElapsed == 2000)
{      
enemyCounter++;
_root.enemy.duplicateMovieClip( "enemy"+enemyCounter, enemyCounter );
}