Fingers crossed someone can tell me if this is possible.

I would want to drive the X Size (height) of the Linear 1S2 in the attached screen grab to be the distance of the Linear 1S2 start to the surface of the plane.

Any ideas/help would be greatly appreciated.

I would want to drive the X Size (height) of the Linear 1S2 in the attached screen grab to be the distance of the Linear 1S2 start to the surface of the plane.

Any ideas/help would be greatly appreciated.