RIA Service not generating custom property

[Icarus123]

Hi, I have the following demo code:

[Serializable]
[DataContract(Name = "A", Namespace = "")]
[KnownType(typeof(B))]
public class A
{
public A()
{
Id = 0;
b = new B();
}

   \[Key\]
   \[DataMember\]
   public int Id { get; set; }

   \[DataMember\]
   public B b { get; set; }

}

[Serializable]
[DataContract(Name = "B", Namespace = "")]
public partial class B : ComplexObject
{
public B()
{
Id = 0;
Description = string.Empty;
}

   \[Key\]
   \[DataMember\]
   public int Id { get; set; }

   \[DataMember\]
   public string Description { get; set; }

}

The problem that I am having is that the RIA service is only generating the following object:

/// <summary>
/// The 'A' entity class.
/// </summary>
[DataContract(Namespace="", Name="A")]
public sealed partial class A : Entity
{

   private int \_id;

   #region Extensibility Method Definition

   #endregion

Can anyone please help me fix this problem, or explain why it does not generate the custom "B" Property? Thanks