VALUE lastr
SOURCE surgery_consumption_IN
WITH -1
COMP (>=1200)
FOR once
WINDOW 1-5/21:35-21:36/*/*
The above alarm triggered on 11/13 @ 9:35 and if you look at the attached screenshot of the thread status you’ll see the last read time was 9:31 on 11/13 which is within 1200 seconds from when the alert fired.