Thanks, that helps.
However, I've attached the pdf as a referenced file meaning when I update the orignal .xls file it updates automatically in VectorWorks. This is working for me except I don't understand what circumstances VW uses to auto-update the file (when it opens?) nor do I know how to tell VW to update the referenced files, which I'd like to do directly after changing the xls file so I see how it looks on the VW page.
Any advice on that?
Cheers!