while Iam reading the below document, Ifound somthing I didnt understand ,Can you explain this " the highlited text "
This means that the created walls have no DataGroup information like hatch pattern, material, volume, fire ration, line weight etc. This information has to be added afterwards.
As Nasir mentioned above, you can add DataGroup instance data to elements that do not already include it, such as Linear Forms. Search for "add instance data" in the delivered Help file for more information.