Groupwise - TO, CC, BC

I encountered the problem with Groupwise external email address

the time when i use the coding below, all [email protected], [email protected], [email protected] has been categories to "TO" category. any problem with my coding?

I'm not use
objMessage.Recipients.Add "[email protected]", "NGW",0

because the address is not in the address book. Other than NGW, is that have any other type which represent external email?

VB Code:

Set objGroupWise = CreateObject("NovellGroupWareSession")
   Set objAccount = objGroupWise.Login
   Set objMessage = objAccount.MailBox.Messages.Add("GW.MESSAGE.MAIL", "Draft")
 
objMessage.Recipients.Add "[email protected]", 0
objMessage.Recipients.Add "[email protected]", 1
objMessage.Recipients.Add "[email protected]", 2

Regards,
JAMES