Clip Volume in VBA

Hi.

I would like to use Clip Volume in Visual basic in Topview, but don't know how to set 'Apply Clip volume by element' and untick 'Display Clip Element'  in the Create Clip Volume window before applying the object.ClipVolume in preparation for creating a Saved View.

My Clip element is just a plain rectangle.

Anybody who can share a hint or two?