Dynamo offset polycurve not working, please help!

Hello every one!
I would like to offset the Polycurve in dynamo (with Revit 2023.1) like this picture. But I’m using the polycurve offset or Many offset both not working.
P/s: My polycure is not only plane. It’s 3D polycure.
Do you have any solution for this trouble?
Download file revit and dynamo: Dynamo forum - Google Drive
Thank you so much!

Polycurve which is not in one plane can’t be offset.
try below.

  1. drape the polycurve in a plane
  2. offset
  3. drape it back to the original surface.(there are several ways to do it)
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Hi @toantrungthach1 …not sure at all, but probably something could work…or try pull your curve on plane as @Hyunu_Kim say

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Dear Sir @sovitek and Sir @Hyunu_Kim
I successfully with this way:

  1. I extruct the poly line with z offset (I create the face boundary).
  2. I offset the polysureface by offset surface node.
  3. I use the intersectgeometry to find the line intersect by both of them.
  4. I joint the lines together and I have the polycure after.
    Thank you so much, thank you sooooooo much!!!
    Love all of you 90000000000 heart heart heart heart heart
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Hi, may u share the solution? I’m with the sema problem over here for the same nodes.