Continuing on from http://www.zen-cart.com/forum/showthread.php?t=32842 ...

This looks like a really good idea, much needed. This would be the one and only reason I would upgrade to 1.3 as life would become so much easier. However, on the demo, I'm not seeing how to multi-select a bunch of attribute values.
Say I pick "colour" and want to add "red, green, blue, pink", it seem to me that I can't select more than one. If I were to find a way to multi-select, is this going to have problems adding to the database?