many thanks for the response,
unfortunately it doesn't work..... I get this error:
Command: POLYTOFACE
Select objects: Specify opposite corner: 346 found
Select objects: ; error: bad argument type: lentityp ((-1 . <Entity name: 1280f370470>) (0 . "POLYLINE") (330 . <Entity name: 128112b0080>) (5 . "E0F") (100 . "AcDbEntity") (67 . 0) (410 . "Model") (8 . "0") (100 . "AcDb3dPolyline") (66 . 1) (10 0.0 0.0 0.0) (70 . 8) (40 . 0.0) (41 . 0.0) (210 0.0 0.0 1.0) (71 . 0) (72 . 0) (73 . 0) (74 . 0) (75 . 0))
PS it's just a little slow....