Make The Default Modelbinding Handle Lists?

How do I make the default modelbinding handle Lists?

Let's say I have a ShoppingCart class, which has a ShoppingCartItem List:

Public Class ShoppingCart
Public Property CouponCode As String
Public Property Items As New List(Of ShoppingCartItem)
End Class

[Code]....

However, when I submit the page, no values are picked up, not even the CouponCode field. The model object is empty. What gives?

Ultimately, my goal is to add/remove items clientside via javascript and then have the modelbinder pick up the changes automatically when the page is submitted.

Update: I was just missing the Property keyword from my model properties declarations. It's too late, and I got to get some sleep. :)