I figured out a way to do this. I created a piece of platform in a seprate sprite and named it TrippleJump, it spawns
player > on collision with > platform
Create object triple jump | Location player.x , player.y + b (b = number that sets it bellow player)
Wait 0.4 seconds
triple jump destroy
This works! I tested it, once you confirm it works than make TrippleJump have an opacity of 0.