auditctl for admin's accessing other user files

Hello I noticed in the man page for auditctl, an example of how to monitor if admins are accessing other user's files. I created a rule like the one in the example. This is great that it is pulling the action and user calling the action! The rule -a always,exit -S all -F dir=/home/username/ -F uid=0 -C auid!=obj_uid I will pull a report on the findings with aureport -f -i | grep /home/username/ The report is heavier than anticipated so I tried to make an adjustment to only capture what happens in the directory -a always,exit -S all -F path=/home/username/ -F uid=0 -C auid!=obj_uid ... but that is returning with Error sending add rule data request (Invalid argument) I then tried the below rule; it does not return an error upon add, but when I do an auditctl -l there are no rules listed -a always,exit -S all -F path=/home/username/ -p=rwxa -F uid=0 -C auid!=obj_uid Is there a preferred way to set the rule, maybe on the inode of the directory, but does not lose the ability to see if an admin is doing it and what action? I have been adding these on the fly, instead of adding to the /etc/audit/audit.rules file, for now. Thanks! Nick Skaggs