[Visual Basic]
Public Shared Function functionname(ByVal AuthenticationTicket As String, _
				    ByVal UserName As String, _
				    Byval NewEmailAddress as string) as xmldocument

AuthenticationTicket

infoRouter Authentication Ticket

UserName

The User Name of the user you wish to change the email address

Sub UpdateUserEmail_sample()
        Const IRAuthenticationTicket as String="sid-xxxxxxxxxxxxxxxxxxxx"
        Const IR_UserName As String = "TestUser"
        Const IR_NewEmailAddress As String = "testUser@abccorp.com" 

        '**** END OF INPUT CONSTANTS ****


        Dim IR_OBJ As InfoRouter.srv

        Dim xmlResponse As System.Xml.XmlElement
        Try
            ClearOutputWindow()
            WriteOutputLine("[UpdateUserEmail]")
            WriteOutputLine("UserName   = " & IR_UserName)
            WriteOutputLine("Email Address= " & IR_NewEmailAddress)
            WriteOutputLine("---------------------------")
            Application.DoEvents()
            Me.ActiveForm.Cursor = Cursors.WaitCursor

            IR_OBJ = New InfoRouter.srv
            IR_OBJ.Url = (txtSrvUrl.Text & "/srv.asmx")

            xmlResponse = IR_OBJ.UpdateUserEmail(AuthenticationTicket, IR_UserName, IR_NewEmailAddress)
            If xmlResponse.GetAttribute("success") = "true" Then
                WriteOutputLine("The User email address has been updated.")
            Else
                WriteOutputLine("server response:" & xmlResponse.GetAttribute("error"))
            End If
            xmlResponse = Nothing

        Catch ex As Exception
            WriteOutputLine("error:" & ex.Message)
        Finally
            IR_OBJ = Nothing
            Me.ActiveForm.Cursor = Cursors.Default
        End Try
End Sub