child objects in rdlc (Studio 2010RC)

Question

Hi,

I am attempting to reference a sub-object in a field expression in a studio 2010 report. This used to work in prior versions. When account references another object with properties the following used to work.

=Fields!Account.Value.Name

(Name is a property of the child object, Account is the parent object)

The same expression syntax no longer works. How do I reference the properties of a sub-object in reporting services in an rdlc in studio 2010.

Thanks