Gotcha, so if I have 10 shirts and 10 hats I need to edit them individually and "include" (attach) them to the glasses. Here is an issue I have and this may be too customized for a solution. For instance, there is a brand called COSTA. They have plastic lenses and glass. We have been offering if they buy a more expensive glass lens pair they can have a hat or shirt for free. Both plastic and glass lenses are in the same category though and we don't want someone willing to purchase a shirt while buying a pair of plastic lens glasses and the shirt rings up for free.
Is this possible? Any ideas? thanks =)