Ideas about the Dell check_om_chassis.pl script and servers

I am getting a lot of "Critical " notices on servers that came with only one PS. I am looking for a way to either supply data for a passive check when the result is “CHASSIS: CRITICAL Power Supply 2 is Unknown (AC) ]”( ie change it to "CHASSIS: OK ) or edit the Perl script to check for this result and return a “OK”. Anyone have any ideas on this?