Trigger Expression - Help

[tiagosoares]

I need to evaluate an value that is returned from this item: Zabbix server:SALES[clientAB]. This item return a absolute value (1,2,3,4,5, ..., 400).

So I have to fire a trigger if in the last 2 hours I have less then 2 sales.

Tks in advance.

[tiagosoares]

Just to keep the info.

As said by Volter in the IRC Channel (#zabbix), if I store as Delta I can evaluate the difference between last and previous...