Great job, Jim. Works great when "upcounting" numbers, which was my original request.
The other way round (downcounting the new numbers to lower ones), of course results in the same error message then before, as the user then needs to disable the feature in the options menu.
As it is "hidden" in the menu, one can forget to disable reverser order numbering and wonder why the renaming doesn't work.
May you can put this option into a check field within box 10, so the user can't "forget" to check it on/off, such as the options to remove specific characters in box 5?
Thanks anyway, it already is of great help for me.