how to use object paramter in OracleParameter constructor.

Question

There are various overloaded constructors for OracleParameter with different parameters. one of which is OracleParameter myParameter = new OracleParameter(Paramname ,Data type, size,ParameterDirection,isnullabel,presision,scale,srccolumnname, srcversion,object); Can some one tell me how to use object parameter in the above consturctor and what is the purpose of object paramter. Sravan.