P

TransmissionData.UserData

Description:
A string which users can store notes in.

Remarks:
Revit merely stores this data; it is never used.

public string UserData { get; set; }

Public Property UserData As String
Get
Set

public:
property String^ UserData {
	String^ get ();
	void set (String^ value);
}

Autodesk.Revit.Exceptions.ArgumentNullException

When setting this property: A non-optional argument was NULL