Outlook Redemption - RDOMail and the watch window not showing real values.

I wonder if anybody knows what the cause of this is and if I can do something to display the values in the watch window. If for instance I put   mailItem.To in a watch item it shows Object is not of Type Redemption.IRDOMail

But this is not correct as this makes clear: MessageBox.Show(mailItem.To);

which of course show the recipient!!!

I am working in 4.3.

Thanks