trying to offset jump height during animation

Unity Engine
1

hey any idea why this won’t work? using mecanim…

transform.position +=new Vector3(animator.deltaPosition.x, animator.deltaPosition.y*animator.GetFloat("JumpHeight"),animator.deltaPosition.z);

where JumpHeight is a curve in my jump animation…

also tried with root position and match target…

2

strange but putting it like this seems to work? can anyone explain me why? whats the difference?

Vector3 position= new Vector3(animator.deltaPosition.x, animator.deltaPosition.y+animator.GetFloat("JumpHeight"),animator.deltaPosition.z);
		thisTransform.position +=position;