how can I import a curve into model graph?

[kirkr5689]

I see some extract curve node  but it doesn't work at all. I am super confused.  Is there any simple way to import a curve  to substance Designer Model graph?

I tried  to read  extract node documentation.  Haven't understood a thing .  Didn't help me a bit.    Could somebody explain step by step please how to extract / import  or whatever a curve from 3dmax or Blender?    Or Modo , I have steam version of it?      So far nothing is working. 

[Luca Giarrizzo]

Hello,

It is currently not possible to import splines or other curve objects into Substance model graphs. The Extract curves node is only meant to generate curves from segments in subdivision meshes.

We have plans to let users use custom curve objects in the future, but nothing specific to share at this time. I appreciate your patience in the meantime!

[kirkr5689]

Thank you for the reply.  

Help says I should have it working with 3d max  fbx export.   But It doesn't for me . I did edge loop selection in 3dMax  , named it  "aaa"  , checked in  selections  in export dialog.   Then in SD I added extract curve node, tiped "aaa"  there and nothing  is extracted.  What have I possibly missed?