Get status' values changing of skills

[Diamond Star]

I want a script ,embedded in battler class, can determine the increment or decrement of staus' values of the battler(like ATK ,STR, INT ....) caused by skill or item and store every chang in a variable in the battler's class
to be able to read it and show it in someway ; either in a window or by using PupUp damage....
this would not be difficult ,but I don't have but some expirence in RGSS.

[Fall From Eden]

For which maker specifically?

[Diamond Star]

I'm very sorry I missed it.
The maker is RPG XP MAKER
Excuse me !