[sv1cec]

It's not as simple as you think. A cron script has to be written, which will check each of your warned members and then it will check the dates of their warnings. For each warning that is older than a predefined time period, it will subtract 1 from the number of warnings of that member.

Here is a script I made up quickly, which should do that for you. I haven't tested it, but it should work.

It's using the Alerts life time (How long will your Alerts stay in a users account?) as a cut-off limit. For any warnings it finds, issued before that time limit, it reduces the number of warnings the user has by one.

You can change the script so that it works based not on the issue date, but on the date the warning has matured and was rendered inactive (I believe this is the proper way to do it). You will find comments in that part of the script, basically you uncomment a line, and comment the line below it.

You can run that script manually or you can add it in your Scheduled Tasks to run once a day.

Let me know if it works.