[Observium] add power usuages

I added one of my HP enclouser, and ran the ./discovery.php -h it does not discover these :

Temperatures: Humidity : Voltages: Frequencies: Current: Power: Fanspeeds :

how do i get these into my observium ?

also,

is there a way to integrate total power in observium ? I get the total by snmpwalk : snmpwalk -c public -v2c test01.local enterprises.232.22.2.5.1.1.1.10 |awk '{ sum+=$4} END {print sum}'

thank

KV