hi Jalal,
here's a link (
http://archicad-talk.graphisoft.com/viewtopic.php?printertopic=1&t=28720&start=0&postdays=0&postorder=asc&vote=viewresult&sid=3532d148d7dd993d3800913413ed250e) to a previous post regarding this topic where i outlined a method i found out about which doesn't seem to be covered in the help files.