SNMP Calulated Item

[Gsmith]

All,
I was wonder if anyone could help me out. Trying to get last value of a total value item. I went through this forum and found some examples but they did not work for my needs.

Where I have look to resoluve my isssue;

https://www.zabbix.com/documentation/4.0/manual/config/items/itemtypes/calculated

Environment
OS: CentOS 7
Zabbix Server Version:Zabbix 4.0.7

I‘m using a SNMP Item with a calculated Item as shown below.

SNMP Item;
Name: Pages Printed Total
Type: SNMPv2 agent
Key: .1.3.6.1.4.1.11.2.3.9.4.2.1.4.1.2.7.0
Update Interval: 1h
History: 90d
Trend: 365d

Calculate Item;
Name: Pages Printed Last hour
Type: Calculated
Key: color.prt.hr
Formula: last (".1.3.6.1.4.1.11.2.3.9.4.2.1.4.1.2.7.0",3600)
Update Interval: 1h
History: 90d
Trend: 365d

With this configuration my calculated Item just mirrors the SNMP Item, so the SNMP shows 300 the Calculated item also show 300 even after 3 to 4 hours running without any change.
How would I be able to just get the Last Hour values from the total amount?
Any Help would be appreciated,

[Hamardaban]

Just use the change() function that shows the difference between the last and the previous value. with a polling period of 1 hour you will get how many pages were printed per hour.

[Gsmith]

Hamardaban
Thank you for the reply. Just make sure I understand you correctly this is what your refering too..

[Gsmith]

Hamardaban
Had to make a correction to the Formula change(".1.3.6.1.4.1.11.2.3.9.4.2.1.4.1.2.7.0",360 0). It works now. Thank you for the advice, much apperciated.

[Hamardaban]

You welcome!