No serializer for AnyType element

[Giovanni Formenti]

Hi,
I have a WebService returning an AnyType element that can contains other
custom XSD elements inside.
When I try to execute a get an exceltion "No deserializer for {
http://www.w3.org/2001/XMLSchema}anyType";
Is it possible to provide some serialization-deserialization rules to that
XML part? I saw that the Client consider the anyType field an Object.
Thank you for any suggestion on that
-- 
Giovanni