How to count how many times a item result

[joanaribeiro_erre]

Hi there,

i have an item that returns text, my gold is to define a trigger that triggers a problem if there are, for example, 5 different values in the last 30 minutes.
Can i do that?

Thanks,

[Semiadmin]

I think it's impossible to do it by a trigger only. But you may create a dependent item with "Discard unchanged" in preprocessing and the trigger for this item, for example,
item.count(30m)>=5 and item.now>0