I have a directory structure like:

d:\directory\4567\file.name
d:\directory\1234\file.name
d:\directory\1\file.name

I want the regex to count the occurrences of "file.name" within sub-directories who's name length is > 1. So in the above example the count should be 2.

Here is what i tested with. 

This did not work/produce any count:

vfs.dir.count[d:\directory\, "\d{2,}\\file\.name"] 

This did not work either:

vfs.dir.count[d:\directory\, "\d{2,}"]

This worked but counted all contents of the directories.

vfs.dir.count[d:\directory\, "[0-9]{2,}"]

This did not work:

vfs.dir.count[d:\directory\, "[0-9]{2,}\\file\.name"]

This worked but gives me one more count than i want.

vfs.dir.count[d:\directory\, "file\.name"]

So can someone explain why the below examples don't work ?

"\d{2,}\\file\.name"
"[0-9]{2,}\\file\.name"

Thank you.