CPU usage on mikrotik

RouterOS The Dude
1

I am trying to get the CPU function to work on the dude. The dude is insatlled on the mikrotik GW.
My problem is it will not register the cpu load at all and generate error I have used the default settings to no avail

Type: Function
Agent: default
Available:if(cpu_usage()>0, 1, -1)
Error:if(cpu_usage()<1, “”, “CPU usage > 3%”)
Value:cpu_usage()
Unit:%
Rate second



Thanks
Elec