Condition Length for Events

Hi,

Here is my configuration: I have hosts with two alimentations, one directly on sector, and the other on a UPS.

I would like to use the default "Host hardware power status" Alarm to put my host in maintenance mode if one of its alimentation go down.

This works well but here is my issue, I want a "condition Length" before going to maintenance mode, for preventing false positive when a micro-dropout occurred.

Is there a way to get the "condition Length" for "events" alarms and not only for "Conditions or state"?