Adding Triggers

[Joao Victor]

I'm trying to add a trigger to a specific host.
After writing the expression correctly i'm able to teste it, and it works normally. But when i try to save the trigger it comes back an error ""/1/expression": invalid second parameter in function "last"."
The expresion in question is ---- last(*********)<= 50*last(*********, 15m)/100

[cyber]

Whatever you try to achieve there... last(/host/item, 15m) does not work... last refers to a single value in a row of values... first, second, third etc.. if you want to move back in time... use time shift .. last(/host/item,#1:15m)

[B]last[/B] (/host/key,<#num<:time shift>>)

50*value/100 is same as value/2