PhotoGallery - help please

programming flash
1

I’m building a photogallery base on this tutorial http://www.kirupa.com/developer/mx2004/thumbnails.htm

I’m trying to add a play button, so the gallery would play the pictures onRelease of the button at interval of 3s.

It’s not working. my code is:

playBTN.onPress = function() {

        this._alpha = 50;
        
        setInterval(this, "nextImage", 3000, 1);

}

Of course I’ll add a pause button as well. Can anyone help please?

Thanks:h: