Supported macros are: {HOST.HOST}, {HOST.NAME}, {HOST.PORT}, {HOST.CONN}, {HOST.DNS}, {HOST.IP}, {ITEM.VALUE}, {ITEM.LASTVALUE}, {ITEM.LOG.*} and {$MACRO} user macros.
$1, $2...$9 macros can be used to refer to the first, second...ninth constant of the expression.
From zabbix docs on operational data:
https://www.zabbix.com/documentation/current/en/manual/config/triggers/trigger
Current optada value does not parse on my instance of zabbix 6.2.7:
PS. I think all opdata in the template should be changed accordingly