How to get bytes traffic incoming instead of speed

[josefco_ap]

Hi all, I'm trying to do a calculated item with the data that I collected from the Template "Template OS Linux by Zabbix Agent"

The original item has preprocessing to translate the data into bps.

I want to give this data and calculate the current bytes received during the 3 minutes slot between updates.

I make some trials but the data I calculated in the new item seems not accurate.

How con I setup it properly? some suggestions?

[josefco_ap]

I finally get it working, thanks btw!