wait i know how to change the variable now. right click on the address then go to change record and then variable and there you go. you can change the variable.

well that's just plain weird. i don't know what went wrong. im sorry but i can't help you.

uneditable? i've never seen a variable in cheat engine that i couldnt change. try it again because im pretty sure that in cheat engine you can change every variable that you find.