Motion Path Return to Original Position

Hello all,

I've done a search and can't find this info. (then again, maybe I'm just not searching for the right thing)

I have a line motion path that a rectangle follows, and when a user clicks on an object, I want that rectangle to return to where it started. (on a motion path)

Is there any easy to do this other than use a second motion path with "relative start point", and just keep moving the end point of the second motion path until it ends up being the right amount in the opposite direction of the first motion path?

The "reverse path direction" would be perfect, but that just reverses the existing path, instead of creating another motion path that returns the object to the original start point.

Thanks for any insight.

- Scott