Scheduled job is not triggering event for glideaggregate

[pokai]

I'm new to developing to bear with me.
I am trying to do a daily scheduled job to check the number of hours worked for the current month and if it breaches 7 to trigger an event. I can get the log to come through but the event fails to trigger. Can anyone advise what I did wrong?

Error: 

getEventTarget() called with invalid record reference: task_time_worked. for event: deloitte.notification.hours.breached, could have been deleted

My scheduled job script is below:

for(var i = 0; i< 1; i++){

var agg = new GlideAggregate('task_time_worked');

agg.addAggregate('sum','u_time_in_hours');

agg.setGroup(false);

agg.addQuery('sys_created_on', '>=', 'javascript:gs.monthsAgoStart('+i+')');

agg.addQuery('sys_created_on', '<=', 'javascript:gs.monthsAgoEnd('+i+')');

agg.query();

var count;

while (agg.next())

count = agg.getAggregate('sum','u_time_in_hours');

var limit = '7';
if(count>limit){
gs.log ('Deloitte has worked ' + count + ' hours this month');
gs.eventQueue ('deloitte.notification.hours.breached', agg, '', '');
//gs.print(count);
}
}

[sanh]

Do you have a notification created to the respective event?

[pokai]

Yes I do - please see attached.

Normally I have triggered events via script with no issues but I can't seem to get a GlideAggregate one to work.

I'm assuming that it will never work with GlideAggregate