Custom Column for Folder Name AND Number??

I have many book duplicates to sort through and delete. (You don't wanna know....)

Example:

At the top of the attached PDF, is my (dumb) attempt at making this column that doesn't work.

Below this is a list of four folders for Lynn Abbey's The Nether Scroll, each with a unique number in parentheses. The book highlighted is the one I want to keep, deleting the others. Oddly enough, this book doesn't show up in the search for duplicates results; only the other three.

So....

• How do I create a column for the name of the actual book folder that will generate "booktitle (0000)"? (Is this even possible?)

• Why don't all four copies show up in the duplicates list? Why only three?

• Is there a way to list all of the book folders in Duplicates? (Four in this example.)

Hope this is the right place for this thread!

Any help would be MUCHLY appreciated!

:help:

Attached Files

folder number column.pdf (263.0 KB)