Composite Design in Revit Extension

[mustafa-hesenow]

I have tried many times to use the composite design for steel beams with deck slab baut it always give this message shown in attached photo.

Please advice .

Thanks

[Rafal.Gaweda · Accepted solution]

It works on american sections only

Example how to change it on your model.

[mustafa-hesenow]

Thanks a lot .