how to change the cooldown of the skills

[C-Mittens]

so im playing this game called “F-Class Adventurer” and I'm using gameguardian.

 

I know how to hack the ingame currency (gems) and edit stats (attack, def, HP, etc.) but im having a hard time changing the cooldown 

Link of the Game: https://play.google.com/store/apps/details?id=net.ekgames.fclasshero

someone please help me here