zabbix trigger

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I am using Zabbix 3.2, and setting up trigger, my trigger is as follows

{Template Social -Proc:proc.num[php,root].max(2m)}<2

I want to monitor php process running on zabbix agents, from the zabbix server I run

zabbix_get -s node22 -k proc.num[php]

and I get 2, which is correct.There are 2 php processes running, but that trigger is showing error on the site and is sending emails for a number of servers.Can I get some assistance please in configuring this, I am using zabbix_agent(active) and I tried zabbix agent

[cbtshare]

My Troubleshooting steps:

I have tried different comparative methods , last() , diff() , minimum 2 minutes

As I said above I ran the zabbix_get command on the server against different nodes and got the correct value 2

I also ran ps fu root and saw the two php processes running , and if I stopped the php script, and run the zabbix_get commannd against the node I get 0 which is correct]

I also read many tutorials, so my last resort was to ask a question.