[flexcoders] Invoking RemoteObject method - Type Coercion error

[moonusamy]

I'm using RemoteObject to invoke a server-side Java POJO method that
returns an object of type com.foo.Expr. I have Expr.java and Expr.as
with Expr.as annotated with [Bindable] and
[RemoteClass(alias="com.foo.Expr")]

I try to reference the returned value in the result handler in my mxml
as follows:
private function fooResultHandler(event:ResultEvent):void
{
  myexpr = Expr(event.result);  

TypeError: Error #1034: Type Coercion failed: cannot convert
mx.utils::[EMAIL PROTECTED] to com.foo.Expr

I expect event.result to be of type com.foo.Expr which it doesn't seem
to be. What do I need to do to get to the object of type Expr that my
method invocation returns?

Thanks
Vijay