Use of the 'change' function in triggers

[lifezard]

Hi,

can anyone please tell me how to use the 'change' function when setting up triggers?

In the manual, it states:

change- Returns difference between last and previous value

I assume it is (last value)-(previous value)? Then, it is possible that change returns a negative value?

I m trying to set the trigger such that change is compared to some negative value: eg. ({DNCGW:Total_Calls.change(0)}<(-10))

but it does not work, coming out with 'Incorrect trigger expression '(0<(-10))'' error.

Can anyone tell me what s wrong?

[lifezard]

just to add... I have set the numerals in items to float, but it s still not working

[Alexei]

ZABBIX does not accept negative values in trigger expressions yet.

[lifezard]

ZABBIX does not accept negative values in trigger expressions yet.

Hi Alexei,

when u ended the sentence with 'yet'.. do you mean you have plans to add in that feature? If so, when?