Trying to set new crop box curves around elevated curtain walls. Offset from these walls. But firstly just around the outside of the curtain wall element. I dont understand how the Boundingbox.PerimeterCurvesOnPlane works yet. Is there a way to extract the curves from a curtain wall using the Element.BoundingBox and use them to set crop box curves? Using the view plane with BoundingBox.PerimeterCruvesOnPlane seemed to make sense to me but that didnt work.