I have a question, we need to create a JQL filter in able to see when a closed ticket receive a new comment (in order to re-open the ticket if we need it).
so OOTB JQL alone cannot analyze comment timing. A common addon folks use is Scriptrunner (lastcommenteddate) so if you have that addon or similar you can achieve thru the extended JQL functionality. However, there is a solution that can be achieved OOTB simply using Automation... create an Automation rule as follows:
trigger - comment added
condition - status equals closed (or whatever your done status(es) are)
Note, if you can definitively define the "reopen" conditions you could add them to your automation rule so that, rather than send an email "hey go look at this", then you could reopen if appropriate.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.