Reverse actors HP MP progression

I'm not too well versed in hacking, or what you've done, but the fact that the HP is going up and down reminds me of having sign errors in math. If you had a negative number with an exponent, if the exponent changed by 1, the result would go from positive to negative or the other way around. I must express that I'm REALLY just thinking off the top of my head, but if you've done any math like that, maybe you could check your work once more.