How to use item name in trigger expression

[bbs2web]

I got allot of notifications from my router's WiFi interface as it transitions operational state when there are no clients connected.

I wanted to change the trigger expression to only match when the interface name didn't start with 'wlan' but Zabbix won't accept my changes:

and {"{#SNMPVALUE}".regexp(^wlan)}=0

Would anyone have a suggestion on how to achieve this? The '{#SNMPVALUE}' marco expands to 'wlan1 - 5.4GHz' or 'wlan2 - 2.4GHz'.

[bbs2web]

[SOLVED] Use item

Got it working by storing the ifDescr in an item and then evaluating that in the trigger expression. Additionally use a trick to obtain the ifAlias to obtain the interface description for trigger action notifications.

Title:
Int. {#SNMPVALUE} ({ITEM.VALUE2}) on {HOST.NAME} operational status changed

Trigger expression:
{Template SNMPv2 Interfaces:ifOperStatus[{#SNMPVALUE}].diff(0)}=1 and {Template SNMPv2 Interfaces:ifAlias[{#SNMPVALUE}].str(this_does_not_exist)}=0 and {Template SNMPv2 Interfaces:ifDescr[{#SNMPVALUE}].regexp(^wlan)}=0