Will do that, thanks!
Before I do that though, I tested the page in question, and it did work, but I have not put the new fields in the cart columns, so none of that info came through. Updating the cart columns is when I got in trouble on Friday, so I am a bit scared to do that! But I think I need to do it before we do a screen sharing session. I am going to do a backup of the page and try it, then get back to you.