I just realized I forgot a step, maybe that's the problem. Derp derp, sorry about that.
So in the PlayerWindow section you have here, there's a portion of it with <Pieces></Pieces>, where it lists each gauge, label, and percent label. You should add in all three of the new ones in there. It tells the player window to look for and use the code you've added.
You may also want to change the ID of the ScreenID of each to reflect the fact that it's the EXP bar.
The rest of it looks correct.
[You must be logged in to view images. Log in or Register.]