Help with "Adding thumbnails" tutorial

I’m done with the “adding thumbnails” tutorial that uses xml. And I want to change the location of the scrolling thumbnails. But when I put my thumbnails_mc (movie clip) and my hit_left and hit_right boundaries in a different position, my scrolling thumbnails don’t work anymore.

Do they have to stay in the specified position in the tutorial or can I reposition them and have it work by changing some of the code.

Here the tutorial I was working from:

Thanks for helping. :slight_smile: