I want to boost the Ex-parameters CRI and EVA, not by a flat percentage amount but by a factor (for example, the skill Power-Up multiplies the user's critical chance by 2, which means if he had an innate crit chance of 5%, it goes up to 10%, if he had 10% then it goes up to 20%, and so on). Same with EVA.
I wanted to use control variables to modify these values but Ex-parameters aren't listed there. Anyone knows a solution to this? Thanks in advance.