How can I using agent keys as macro in server side?

[Haifeng]

I am using some UserParameter in Zabbix agent side, and want to using the value from server side. Can I using macro in server side?
For example:
Agentd.conf, I define some UserParameters, UserParameter=agentGroup, echo g1,g2
On server side, Can I using {agentGroup} to get the value "g1,g2"?

Thanks for your any information.