I still have problems I'm afraid. I am adding a userproperty when the user
saves a new appointment and setting its value with my user reference string.
I can go to the saved appointment with Outlook Spy and my property is there
and set correctly.

I right click and delete the appointment. Go into the deleted items folder
and open the item with Outlook Spy - the user property has gone -
userproperties.count is 0.

Alan

"Ken Slovak - [MVP - Outlook]" wrote:

Writing to GlobalObjectID is a real good way to screw things up with
meetings and appointments.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"AlanGlover" wrote in message
...
Thanks for this.

I suppose the second paragraph means I shouldn't write to this property?

The first para is a great help though I have clearly misunderstood
something
I read (or read some internet garbage), and it sounds like I can just use
a
user property. Will try that tomorrow.

Thanks

Alan