Hi
See and save this useful document in this link: http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/cd12d590-0201-0010-80a6-c3cafeb636ed?QuickLink=index&overridelayout=true&5003637739673 with the title "The New ABAP Debugger" by Christoph Stoeck and Boris Gebhardt.
After, follow these steps, call the debugger with /H
and set the filter
I hope this helps you
Regards
Eduardo