Hello

I have installed an OL form to handle custom messages, ie. messages with
extended properties. I also installed menu and toolbar to handle custom
messages.
Creating new custom message from OL GUI works fine - the new message opens
in my custom form.
But sadly, opening a custom message programmatically fails - the message
always opens in the standard OL form, not my custom form. Meaning that not
all the message properties can be displayed or edited for a programmatically
opened message.
Could this be because the FormDescription.MessageClass is wrong?
Outlook Spy reveals that the message's MessageClass is correct:
IPM.NOTE.MYNOTE, while the message's FormDescription.MessageClass is wrong:
IPM.NOTE.
How to change the read-only property FormDescription.MessageClass...? Is
there anything else that could cause this problem?