UserControl Default Property

I have this code for a UserControl called fnd. What I want is to make the ContactNumber property the default property. For example, with a textbox called txt you can do vMyText = txt and it returns the default Text property. How do I make ContactNumber the default?

VB Code:

Option Explicit
 
Private mvContactNumber
 
Public Property Get ContactNumber() As Long
  ContactNumber = mvContactNumber
End Property
 
Public Property Let ContactNumber(ByVal pContactNumber As Long)
  If pContactNumber > 0 Then
    UserControl.PropertyChanged ContactNumber
    txt.Text = pContactNumber
  End If
End Property
 
Private Sub txt_Change()
  With txt
  If .Text = Val(.Text) Then
    mvContactNumber = .Text
  Else
    mvContactNumber = 0
  End If
End Sub
 
Private Sub UserControl_ReadProperties(PropBag As PropertyBag)
  ContactNumber = PropBag.ReadProperty("ContactNumber", 0)
End Sub
 
Private Sub UserControl_WriteProperties(PropBag As PropertyBag)
  PropBag.WriteProperty "ContactNumber", ContactNumber, 0
End Sub

Click somewhere in your property get/set procedures, and go to Tools->Procedure Attributes. Click Advanced, somewhere in there is a box called Procedure ID, in there select (Default).