How can i thold make total?

[Aristein]

This is my Tholds configuration in CPU usage ( use ucd/net - CPU Usage Template ).

thold1.PNG (27.14 KiB) Viewed 814 times

i want cpu_nice+cpu_system+cpu_user value.

then, i try this.

thold2.PNG (22.89 KiB) Viewed 814 times

but this Expression seems doesn't work.

how can i get total value?

help plz!