Can't get OdTable.GetObjectOdRecords working - what am I doing wrong?

I can’t seem to pull Od records from objects… screeshot of error below. What can I try? Thank you

Running C3D 2021.2 w/ AutoCAD 2021.1, Map 3D 2021.0.1
Dynamo Civil 3D 2.5.2.860 w/ Civil3DToolkit 1.1.22