adding files number to zip file name

Is it possible to rename zip file by adding the number of files it includes?

similar to <Num Files> ?

TIA

Check out the <ExifTool:Warning> tag. I can't guarantee that it will always work - however, for all zip filenames I have tested, it has returned "[minor] Use the Duplicates option to extract tags for all N files" - where N is the total number of files and folders in the zip archive. (I assume that this "warning" refers to the stand-alone version of ExifTool and isn't really intended to be a tag).

So Try...
Add: <ExifTool:Warning>
At index: 0
Backwards

followed by...
Replace: \[minor\D*(\d*)\D*
with: _\1
Use regular expressions

Reply to #2:

Nice trick :-)
Works for me though. Thanks a lot.