AddBeamsByCurves error when editing parameters

Rhino.Inside Revit
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2

Hey @camilla.boersand
I justed tested a simple column-placer-GH-script and it seems to be working fine.

2019-12-18 09_48_14-Grasshopper - unnamed
2019-12-18 09_48_14-Grasshopper - unnamed1563×853 112 KB

Would you be able to share your GH script so I can replicate the issue?