SurfaceZone 1 (output value = surface) gives an error at a PolyCurve.Curves node

SurfaceZone 1 (output value = surface) gives an error at a PolyCurve.Curves node (see fig 1 and fig. 2).

Ultimate goal is to get the edge surfacing in Revit (see red lines in fig. 4).


Fig. 1


Fig. 2


Fig. 3


Fig. 4

Do anyone have a solution for this?

Thanks in advance.

The output of SurfaceZone1 is a surface.

Polycurve.Curves is asking for a Polycurve as an input. Replace the Polycurve.Curves node with a Surface.PerimeterCurves node and you should be all set.

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@JacobSmall thanks

Problem solved.


Fig. 1

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