How to get pt-kill working?

Hello yes it is running (and that hyphen was autocorrect sorry):

root 28402 0.2 0.4 203824 17552 ? S Oct29 7:02 perl /usr/bin/pt-kill localhost —daemonize --busy-time 4 --kill --log /tmp/killed --ignore-command .DBWATCHER_IMMUNITY. --execute-command /etc/zabbix/externalscripts/query_kill_notifier.sh

Thanks for your help, any idea what I could possibly be missing? Nothing in the log surprisingly.