Thank u so much. It worked. Thanx
I have another question, regarding parsing an IFC file.
I saw two pictures in “https://dynamonodes.com/2016/09/07/read-from-ifc/” about “Read From IFC Node”, They show how to parse an IFC file and filter IFC name and Attribute Values. But I don’t know what is the node which connected IFCWALL to “List.FilterByBoolMask” node as shown in attached figures. Could u please tell me what this node is and how to filter the outputs, how to show each IFC name with all its ifc parameters and their value separately. For example it shows me the IFC parameters and their values for each wall of my Revit model.