Oracle Developer Tools for Visual Studio

Hi,

I have installed the new Oracle EF 4 enabled ODP.net and was able to get it working with stored procedures returning sys_refcursor (thanks to the people who gave me answers on this forum).

Now I would like to have a stored procedure that I can call to send a new entity and get back the ID (internal key) as an output parameter and store it in the entity. I am able to assign it to an entity and even map the output parameter but I get the following error when I try to use it.

"+Error 2047: A mapping function binding specifies a function Model.Store.PKG_X.CREATE_NEW with an unsupported parameter: PID. Output parameters may only be mapped through the RowsAffectedParameter property. Use result bindings to return values from a function invocation.+"

From researches I did on google, it seems that the EF 4 does not support output parameters. They support binding variables of some kind for SQL Server. How can this scenario be done within Oracle? I absolutely want Oracle to handle the values assigned to the primary keys.

Thank you