Execute Oracle Package Using NHibernate

Hi ,

I am using NHibernate as ORM, Oracle as database in my MVC application. I have a package with a parmeter OUT type. I want to execute that package using Nhibernte. My mapping is below:

<?

xmlversion="1.0"encoding="utf-8"

?>

<

hibernate-mappingxmlns="urn:nhibernate-mapping-2.2"namespace="DSSGOutlet.Domain"assembly="DSSGOutlet.Domain"

>

<

sql-queryname="GetNewOutletId"callable="true"

>

<

query-paramname="x"type="System.string"

/>

{ exec pkg.Generate_id(:x)}

</

sql-query

>

</

hibernate-mapping

>

IQuery

query = ActiveSession.GetNamedQuery("GetNewOutletId");

var result = query.SetParameter("x","").UniqueResult();

returnConvert.ToString(result);

It is not working. I don't know how to Handle OUT type parameter x. Please help me.