Rhino inside Revit_Adding roof, Organic form

Hi Everyone,

I have an organic form roof, (internalized GH file with surface attached). I need this to add as a roof/floor in to revit, so I can select the face and extend the walls and columns to the face of the roof. I am not able to bring it as a roof or floor element. I am able to add this as generic element but this is not useful. Any help will be much appreciated.

Internalised File surface.gh (82.5 KB)

Thanks Again