Lofted Boss/Base

Hello Everybody,

Please see attached.  Ihave extruded a simple cylinder; however, i need the top to be of a smaller diameter than the base so there is a smooth transition from the base diameter to the smaller top diameter.  Is this where a Lofted Boss/Base is used, if so, im not using it correctly.

Thanks

Charles

SolidworksDrawings And Detailing