Node Corridor.GetPointsByCode displays empty list

Dear Dynmo users, I am trying to use the node Corridor.GetPointsByCode for the package CivilConnection (Version 2021). The DWG file with the corrdior ist opend in Civil 3D, the corridor is exported in LandXML to %temp% but i get always an empty list in Dynamo.

Does anyone have any idea what the problem is? Thanks in advance