Need Guidance with doing actual jumps with Mecanim

Hello, i need some help, usually i try not to post for help but this is confusing. Okay so what I'm trying to Understand and do is how i do a actual jump if my character uses Mecanim and by actual jump i mean my character moves up (on Y) and forward I'm using the basic locomotion script from the asset store i was able to add a jump/flip in animator but i cant change the jump height or anything. Is this done through script if so can some one help me? i set up cubes i just want my character to be able to actually hop up top of the cube.