Offset a 3D polyline for ditch bottom

[Kevin214]

Hello All

Im new to the forum and to Carlson/Intellicad. I am using a 3dp for the creation of a trapizodial ditch bottom. I have drawn one and when I go to offset for my 2' ditch bottom, I am unable to select my 3dp to be offset.

Any ideas?
Thanks

[Kevin214]

I figured it out OFFSET3d.....