Problem with a jump with interpolation

agueis

Hello, I have created a box that falls from the roof in a interpolation, the box has the rule, that when the actor hero collides with the box, the box is interpolated to the position -300 y , the problem is that I want the actor hero quickly jumps to other box when he touches the box, but there is a problem and the actor hero gives a small little hop when is interpolated by the box and sometimes fails the quickly jump, Can anybody help me?