When using a trigger with another expression that use time to evaluate, Zabbix Server fail to evaluate the entire expression.

Por exemple, create the trigger with the following expression:

{HOSTX:measure.time[cx2venda].nodata(15m)}=0 and {HOSTX:measure.time[cx2venda].avg(15m)}>4

The item is Zabbix Trapper and not arrives all the time, only when a user click on specific link. The situation is that if no one data is arrived in last 15 minutes the trigger should become OK, but this not occur because the fail on evaluate 15m with no data.

The expected behavior is the trigger turn OK because, in fact, no data is arrived and trigger become FALSE.