Notifying Inbox that message attachment has been processed

Hi all,
I really hope somebody can help me here:

I've created a recognizer, which correctly recognizes a file type and trigger the launch of an application to process the message type (I do it in the clean way, recognizer do not launch the app, it only returns the degree of certainy about file type and let the OS luanch the most appropriate application which has registered itself to process certain mime types). Now, everything is fine, my aplication is lauched and I do whatever I want with the attachment, but when I exit from the app the Inbox still says thaty the message has not been read/processed. Now, I understand that before exiting from my app I should notify the (eventual) container app (in this case the messaging app) that I have done my stuff with the content using something like:

iDoorObserver->NotifyExit( MApaEmbeddedDocObserver::ENoChanges );

now, I've tried different values as argument for NotifyExit, but none seems to achive the effect.

What I'm doing wrong?


Thanx in advance.


Cheers,
Lev