Calculated Item can't be added.Invalid parameter "/1/params"

[skyboy]

I tried to add a calculated item to monitor the total traffic.

The formula is 'last(net.if.in["enp4s0'])+last(net.if.out["enp4s0'])'

But it couldn't be added. The error message was Invalid parameter "/1/params": incorrect expression starting from "last(net.if.in["enp4s0'])+last(net.if.out["enp4s0'])".

What did I miss?

[skyboy]

I found the issue!

The formula should be

last(//net.if.in[eth0,bytes])+last(//net.if.out[eth0,bytes])'

But in this article https://blog.zabbix.com/zabbix-monit...xplained/9950/, it was

last(net.if.in["enp0s8"])+last(net.if.out["enp0s8"])

[sanq]

You were a big help!

[sergio-gimenez]

Super helpful, I was stuck on this.Thanks