returning output parameter values of Stored Procedure from DAAB of Ent. Library

Database db = GetDbConnection(0);
DbCommand dbCmd = db.GetStoredProcCommand("spName");
db.AddInParameter(dbCmd, "@ProductID", DbType.Int32, 1);
db.AddOutParameter(dbCmd, "@SubmID", DbType.Int32, 0);
queryOut = db.ExecuteNonQuery(dbCmd);
return Convert.ToInt32(db.GetParameterValue(dbCmd, "@SubmID"));