Okay, you can't edit the bmp because these values CHANGE based upon variables in AH. The arena has settings that allow hardness and "lbs required" to be adjusted at will.
This is evident by the HQ hardness, which has gone up several times.
So editing a bmp won't work, because the bmp wouldn't change, but the values would.
I think what they're asking for is text that the program overlays over the bmp, and the text would be updated for whatever arena settings are in effect.
The problem is that the bitmaps are just images, and it would take a bit of programming to say "okay, on this map this text goes at these coordinates, but on THIS map they go here, and on THIS map they go there" and so on.