Revit 2025.3 APIScheduleFilterSetNullValue Method Sets the filter to have no specified value (used for HasParameter filters). Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)SyntaxC#VBC++F#public void SetNullValue()Public Sub SetNullValuepublic: void SetNullValue()member SetNullValue : unit -> unit See AlsoReferenceScheduleFilter ClassAutodesk.Revit.DB NamespaceSend comments on this topic to Autodesk