Thanks for that. With that pointer I just spotted the (Note the extra pairs of brackets in the help file. It now works as advertised.
I have removed the superfluous escape characters but will stick with [0-9] as it saves me 18 characters in the search string.
Cheers
(This is all to strip out dates from automatically generated PDF bookmarks. Now that it is a TP macro, it runs in seconds and saves hours of work. Good result!)