Export your save using checkpoint copy it to pc and use a a hex editor like hxd search for your stats. Your stats will be in hexadecimal so If your using windows open the calculator and put it In programmer mode. You will know if your in right area because your stat values will all be together. I think hp and MP are how much you have and your max. Also if save is in little endian meaning you might have to reverse the bytes so if you want to search for 99999 in hex thats 01 86 9F but you reverse that to 9F 86 01.