Family by Solid Loft

Hello, everyone!
I need to create a Solid by joining so many CrossSections. Cross Sections were obtained from x,y,z coordinates from Excel. I’ve managed to create solid, but I have a problem:

I can’t assign any family to this item. Using the “FamilyType. ByGeometry” the only family I can assign is a Mass

I’d like to say, for example, that the object is a Bridge Deck…

Thank you in advance for your reply!


This is a commonly used node from springs to make a family by category.