Zabbix agent check system.cpu* doesn't work

[elings]

Hello!

I tried some new items with following key:

system.cpu.idle1
system.cpu.system1
system.cpu.user1

I tried it with active check and normal check, but i only get "not supported by zabbix agent" and i get no data.

Should this work at all? or have i just made an error....

Regards
Per Elings