Trigger for last N values

[LASN]

Hello all.

I've been looking for a way to trigger an event when last N values are greater than X. The function .last(#N) gets de Nth previous value, but I'd like to get all N values, and compare then to X. If all of them are greater than X, then trigger the event. Does a function like this exist in Zabbix?
I'm using avg(N) right now, but sometimes I get a spike much greater than the treshold, what makes the average value higher than the established limit, even though is just one value. I would like to eliminate this event with the function described before.

Thank you

[nelsonab]

use min item.min(#5)>=val

[LASN]

True, it will work. Thank you.