How do I update the BookTitle and PartNumRevDate elements?

I've been trying to figure out how to update the BookTitle and PartNumRevDate element tags (using Structured Frame) but am getting nowhere. I've tried:

• Selecting the tag, then selected Elements | Edit Attributes, but the dialog that appears doesn't show the existing string [book title/part num] nor does it let me add the new book title/part num as an attribute of the tag.
• Selecting the book file, then update these attributes in Structured View, but the new book title and part number were never updated in the BookTitle and PartNumRevDate element tags .
• Selecting the file, then selected File | File Info attributes and that didn't change/update the elements either.

Has anyone else experienced this problem, and if so, how did you resolve it?

Thanks!

Kelley