Zabbix Problems API: filter similar events with different priority - help needed

[sire]

Consider a case when there are two similar events with different priorities on the same host:

1)

"description": "More than {$ZPOOL_AVERAGE_ALERT}% used on zpool rpool on {HOST.NAME}"
"expression": "( {180897} / ( {180898} + {180897} ) ) > ({$ZPOOL_AVERAGE_ALERT}/100)"
"priority": "3"

2)

"description": "More than {$ZPOOL_HIGH_ALERT}% used on zpool rpool on {HOST.NAME}"
"expression": "( {180901} / ( {180902} + {180901} ) ) > ({$ZPOOL_HIGH_ALERT}/100)"
"priority": "4"

Zabbix problems dashboard and problems widget in a clever way are displaying only the second event. I would like to do achieve the same effect using Zabbix API, perhaps with some additional coding. Can someone please give me a hint on how the similar events with lower priorities can be filtered out?

[sire]

Seems there is no magic in the Zabbix GUI problems dashboard and widget. It might be that they are using the skipDependent parameter of the trigger.get API method. While I was using problem.get and event.get methods, where skipDependent is unavailable. Going to have a closer look at trigger.get and check the above idea.

[sire]

Yep, skipDependent did the trick. Problem solved.