Since you can have other To recipients besides the one the check box adds, you'll probably find it easiest to handle this in the Item_Send event handler. Note the syntax for referring to a control using the page and control names:

Function Item_Send()
Set myPage = Item.GetInspector.ModifiedFormPages("Name of your customized page")
Set CheckBox1 = myPage.Controls("CheckBox1")
If CheckBox1.Value = True Then
Set recip = Item.Recipients.Add "name_of_recipient"
recip.Resolve
End If
End Function
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"adubb" wrote in message ...
Yes the message can have more that one To recipient and the check box is
unbounded.

"Sue Mosher [MVP-Outlook]" wrote:

Key questions:

1) Can the message have more than one To recipient?
2) Is the check box bound to an Outlook property?

In the meantime, see http://www.outlookcode.com/d/propsyntax.htm

"adubb" wrote in message ...
I have a check box on my custom form and I want it to populate the "To" Field
with the corresponding email group when it is check...any ideas to generate
this?