Hi takayuki Osato

The "Grouped Search" expression currently works by supporting the use of a back reference only.  So if you wanted your expression to work you would use this:

RegEx source: (?<![0-9])([2-9][\d]+)(?![0-9])

RegEx target: $1

Anything else is taken literally.  There is a change to this due in the next CU that will allow any regex construct to be used as regex, but for now you can only use the back reference.

I would also note that your expression excludes numbers beginning with "1", so these would not be found for example:

There are 11230 files

There are 149 files

But perhaps that's ok for your target text?  Just in case maybe something like this might be better?

([2-9]\d+|[1-9]\d{2,})

$1

Hi takayuki Osato

The "Grouped Search" expression currently works by supporting the use of a back reference only.  So if you wanted your expression to work you would use this:

RegEx source: (?<![0-9])([2-9][\d]+)(?![0-9])

RegEx target: $1

Anything else is taken literally.  There is a change to this due in the next CU that will allow any regex construct to be used as regex, but for now you can only use the back reference.

I would also note that your expression excludes numbers beginning with "1", so these would not be found for example:

There are 11230 files

There are 149 files

But perhaps that's ok for your target text?  Just in case maybe something like this might be better?

([2-9]\d+|[1-9]\d{2,})

$1

Hi Paul,

It's great to know that this limitation will be lifted in the next CU.

And, thanks for pointing out the mistake in my source regex! I will definitely change it.