How to Shell a Sphere in CATIA V5

This may sound weird, but how do you shell a sphere in CATIA? First, you need a sphere. Model a sphere as a solid using the shaft command (sketch Semicircle D of __mm diameter) or use the shell command in GSD. Or you can make a sphere in CATIA using a CATScript macro. Then, to shell the sphere geometry:

Shell Command. Add a value in Default Inside Thickness eg: 2mm
Select the sphere surface in