AS Alpha

So I have this code:

for (i=0; this.achtergrondfs._alpha > 20; i++){

      this.achtergrondfs._alpha = (100 - i);

With achtergrondfs being a movieclip. My problem is that from the moment I open the browser window, the alpha movieclip is already at 20%. Is it because it goes so fast my eye can’t see it? If yes, how can I make this slower?

Thanks a bunch! :slight_smile: