Skill Points not in Gameplay Constants?

I tried looking for Skill Points gained at Gameplay Constants, but it is not inside, correct me if i am wrong, but i have look through it atleast 5times. Is there any where else i can disable auto skill points gain every level?

with a trigger with adds everytime an hero gains one level -1 sp to him

substract one point at every levelup

If a hero can level up multiple times in an instant, then the level up event may only trigger once for multiple levels being gone up, though, so be careful.