When I try to load meshes as families at a time it shows on my Revit as a red transparent color after releasing the element the families are there under a generic model but inside that family is empty
multiple Mesh families.gh (9.2 KB)
Hi Muhammed,
You’ve got an empty item here, and these should be grafted to be individual families.
You will also want to graft your trees to get individual families.
Since you named the Layer the Family Name you can get the Geometry Attributes instead of having a list to graft against the geometry using Rhino 8 or a plugin.
re_multiple Mesh families.gh (15.0 KB)
Just curious, what visual style is this?

Shaded mode in Revit
Good Day Muhammed,
In this situation the controlling the materials through the Project Subcategories looks to be optimal.
The confusion that might be coming in is that once you create a material / subcategory in a Family and push it into a Project you need to control it from the Project. Any changes to the Family Material/Subcategory are not going to propagate to the Project.
You can see here that a SubCategory created in the Family and Pushed to the Project has a different Element ID.
Hi, I have a problem that could be included in this thread. I would like to convert multiple meshes to Revit families, but keep the same layer name. I have managed to convert the Meshes to Revit families, but the layer name doesn’t match the mesh. It randomly assigned layer names to my families. How can I fix it? Here’s a screenshot of the problem. Additionally, I’d like to create shared parameters for those families and assign values to them, all within Grasshopper. How could I do this?
Thank you very much for the help.
It hard to say by just looking at the picture. Would be nice if you can attach the sample files.











