How to add TIN surface boundaries

[hosneyalaa]

Create Object ID Collection

The AddBoundaries method for civil 3d surfaces requires an object ID collection of the polyline boundaries. How can I create an object id collection in python. In my case, there will only be 1 polyline in this collection. I’m using this example as a guide. http://help.autodesk.com/view/CIV3D/2020/ENU/?guid=GUID-7C32E309-9B54-42A0-A4DC-C6FD592071F2 [image]