So the solution for now is to store the ID somehow before alarm termination. We can use filtering script in the EPP rule:

a = FindAlarmByKey($event.lastAlarmKey);
$event.setNamedParameter("lastAlarmID", a.id);
return true;

return true; is needed since this is filtering script and EPP rule will be processed further only if this script returns true.

And in your script that is used by the %[script] macro:

return $event.getParameter("lastAlarmID");

We are adding a new parameter to the event. This parameter will be accessible in any EPP rule that goes below the one where it's being added.

Ah, and actually you don't need the %[script] thing any more - you can just use %<lastAlarmID> macro - this should return value of event's parameter.

thanks for the reply that also works for new Alarms but this issue I have is when the event is raised for terminating the alarm it doesn't work and raises the below

Error:
Minor vm-netxms-srev SYS_SCRIPT_ERROR Script (getAlarmID) execution error: Error 14 in line 3: Function or operation argument is not an object 07.10.2025 08:58:16

Script:
//return $event.id;
a = FindAlarmByKey($event.lastAlarmKey);
return a.id;

But in $event there's lastAlarmKey attribute, so we can use that to get alarm's ID:

a = FindAlarmByKey($event.lastAlarmKey);
return a.id;

Or course, alarm should have a key and this key should be unique.

At some point we will add lastAlarmID attribute to $event.

thanks for the assistance that works great for new alarms unfortunately when it runs for a terminating alarm it doesn't return the alarm id

Regards
Richard

There's no built-in macro for alarm ID, but there's %[script_name] which will call a script from script library. There'll be a few variables set in the script, specifically:
$object - always is set
$node - set if event is created on a node
$event - when script is called from EPP
$alarm - if at given moment of event processing by EPP rules an alarm is already created.

$alarm variable has Alarm class described here: https://netxms.org/documentation/nxsl-latest/#class-alarm , so simple script

return $alarm.id;

should do the job.

/etc/netxms/scripts/send_event.sh "%K" "%I" "%n" "%S" "%c" "%A"