Ultimate Force Heat Level Hack: Heat 1 jumps to Heat 10 and stucks at Heat 10

[jaigitrep159]

When using Ultimate Force Heat Level Hack, i pressed the PageUp button, like 2 times or many times, Heat 1 jumps to Heat 10, and stucks at Heat 10 rather than reset to Heat 1. I try to re-enable it and i pressed the PageUp button, it didn't work. Just the same thing, stucked at Heat 10.

using MW Black Edition (2005) 1.3.