Node Form. ByLoftCrossSection

Family consists of arcs and lines (see picture)
Family on track
I want a solid between the sections
With Form node. ByLoftCrossSection but does not work
Help?
Thanks for collaboration

Hi @alex_volt

Currently your feeding “String” to “IsSolid” you need to connect “Boolean” node or use code block “true”.

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Thanks for collaboration
I tried but it still does not work

Thanks for collaboration
I tried but it still does not work

You’re feeding the node Revit model curves. That can only work inside a family as the message says.
You need to connect Element.Curves directly to Form.ByLofstCrossection.Additionaly you can try making Polycurves from the curves before that.

It does not work yet
Thanks for collaboration
I saw this


but here it works … but I do not think there is a difference

Are you running the definition from a project or from a family?

In the project I entered the family formed by arcs and lines

So the example you showed me is running in a family. Form.ByLoftCrossSection works only in the mass/adaptive family environment.

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Thank you for cooperation
It works