Unique value counts in kibana

Hello.

I asked a question a while ago - see link Unique value counts in kibana

After looking at your answer, my challenge is still that I cannot find the place where I can connect my visualization to an alert

I have created a search and from there created visualization based on my search and want from there when it hits a specific limit value, I would have an alarm.

I'm still looking but can't find the place where I link my visualization to an alert. Hope you can point in the right direction