Add air box to a complex geometry via LiveLink for SolidWorks

Hi folks,

According to LiveLink for SolidWorks Users Guide, the geometry sequence can only contain the LiveLink for SolidWorks, however, one needs to add an additional air box for some physics interfaces, i.e., calculation of the magnetic fields in a computer case. Is it possible to add an air box while keeping the original SolidWorks model? Thanks in advance?

Regards,
Tony