Solved SuperHeroes Plugin hulk power

Hello Everybody
i'm making a new SuperHeroes plugin
i made Flash and Thor and Iron man and super man powers but i couldn't make hulk powers
so i made the high jump using

Code:

setVelocity(new Vector(x,y,z));

and i managed to make explosion when he jumps so he first drops any item and creates an explosion then jump i need to reverse it by making him jump then when he is grounded after jumping not using onMove function do explosion please Help

Edit: Fixed it by making a boolean isEnabled() in my powers function and making new void that has a loop works after isEnabled sets to true and see if player isgrounded and after he is grounded first code to stop checking and createsExplosion