Business Area Field not Update in VF02 for output tex

Hello All,

in vf02 transaction the business area is not populating in case of output tex,i already search the relavent document in sdn but its not working,i impliment the exit userexit EXIT_SAPLV60B_006 (member of enhancement SDVFX006). as referance of http://scn.sap.com/thread/3146034,but my exit is not at all triger i check all the things like the project is already activated and i also thing that we need to fiel the bseg-table for tha i wrote the code also, as refer to

http://scn.sap.com/thread/3164333,please suggest to resolve this issue. in  note SAP Note 199886 it say its a stnd.behv .

THANKS,

Sam