See my reply in program_vba.
Please dod nto multipost.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

"shubhangi" wrote in message
...
Hi!
I've custom xheader (say x-Matter) added to outgoing message.On
receiving end I extract the xheader ,display on control(cmbMatter)
placed on form region of read message.User can modify the value of
that control.When the user presses save bttn on tha same form
region ,I need to update the same Xheader(x-Matter) with updated
value of the control(cmbMatter) entered by user.So I need to modify
PR_TRANSPORT_MESSAGE_HEADERS & x-Matter both.
How to do this ?
Thanks!