Thank you for the reply Steve. I considered the XControl as well, but thought I would try picture controls first. I ended up making my own version of the progress bar by overlaying two picture controls (one of the bottom logo, one of the top). I use property nodes to read the height and width of the bottom logo, I wire the height of the bottom logo to the top logo and multiply the width of the bottom logo by the percentage of progress and wire this value to the width of the top logo. After a bit of fine tuning I was able to produce the effect I was going for.