How to have trigger relate to multiple values?

[high-t]

Hi.
I need to report the current and previous values of my host's cpu utilization value when it changes.
Here are my settings:

Zabbix Version (Servers, Proxies, Agents): latest 4.4
Host is reporting to Active proxy.
Active agent.
Trigger name: Value Changed
Operational data: Value Changed from {ITEM.VALUE1} to {ITEM.VALUE2}
Expression: {server.name:system.cpu.util.diff()}=1 [where server.name is my host name]

Last data shows change on the reading of cpu.util , and the trigger fires. So far so good.
But the values for both {ITEM.VALUE1} and {ITEM.VALUE2} macros are the same: the last value of cpu.util .

How do I get this to work?

Thank you in advance!
Amit.

[high-t]

To use indexed macros such as {ITEM.VALUE1} and {ITEM.VALUE2}, you must use two item keys in the expression. Example of the expression:
{server.name:system.cpu.util.last(#1)} <> {server.name:system.cpu.util.last(#2)}
Left part is {ITEM.VALUE1}, right {ITEM.VALUE2}

https://www.zabbix.com/documentation/current/manual/appendix/macros/supported_by_location#indexed_macros

Or you can try to use {{HOST.HOST}:{ITEM.KEY}.last(#1)} {{HOST.HOST}:{ITEM.KEY}.last(#2)} in notification, ie.
change was from {server.name:system.cpu.util.last(#1)} to {server.name:system.cpu.util.last(#2)}

Thank you, splitek . Used your expression, but still yet: I'm getting the same value (which is the latest value) in both macros.
Example:

Operational data

Value Changed from 3.184 % to 3.184 %

Can you try this in your environment?
I fail to understand what am I doing wrong..

Thank you.
Amit.

[high-t]

Thank you splitek . I was able to resolve this. As it turn out, the {ITEM.VALUE1-9} is useless, as it always return last value (I don't understand if this is a bug or a feature, but it's useless anyhow).
However, {{HOST.HOST}:{ITEM.KEY}.last(#1)} , {{HOST.HOST}:{ITEM.KEY}.last(#2)} etc are usable and react as expected, delivering historical data. See screenshot here below: