Problem with Services and Web Scenario

[mauro]

Hi everyone.
I use Zabbix LTS 5.0.36; for an host I have a Web Scenario and it works fine.
Also I have set the trigger {HOSTNAME:web.test.fail[WebScenarioName].last()}>0
In the last 10 days the problem was triggered one time for 22h.
In the services menu, I have created a child with this trigger, but although I choose 1 month, the SLA is still 100%. In the Problems section I see the trigger raised in the past, but not in Services. The SLAs of other services that are not related to web scenarios are calculated correctly.

[mauro]

Resolved, I presume.
The problem is that I created this Services today.
I thought the services check the history of the problems. Instead they seem to be separate tables: in essence, when you create a service, the recalculation of the triggers raised in the past is not performed. Only those raised by the creation of the service will count. This for each trigger, also linked to Web Scenarios.