Thank you for your reply. My previous code did actually have an end statement. It was tucked away at the end of the else statement. Unfortunately, your code doesn't seem to work for me either. The power bar is just blank, which I really don't understand. It's like the code isn't even getting past the if statement.
I did a little bit of testing with the code, and I can get it to display UnitPowerType as text or UnitPower as a flat unit, so I know it can handle those arguments, but for whatever reason it seems to stall on the if statements. I even tried to set up a local variable and use that in the if statement to display just plain text and it didn't work. I'm beginning to wonder if Stuf Unit Frames even allows if statements at all. D: