I'm trying to build a trigger to verify if the configured hostname in the zabbix_agentd.conf file (via the agent.hostname item key) matches the technicalname which is configured in Zabbix ({HOST.HOST}).

Unfortunately, this macro cannot be used as a parameter for the str() or regexp() trigger functions.
Please allow support of the following macros in trigger expressions:

• {HOST.HOST}
• {HOST.NAME}
• {HOST.PORT}