[{"name":"Josh","personId":"1234","cash":100,"events":[{"type":"event1","active":true},{"type":"event2","active":true}]},{"name":"Angelo","personId":"7890","cash":50,"events":[{"type":"event1","active":true},{"type":"event2","active":true}]}]

db.collection.update({personId:"1234"},{$inc:{cash:100},$set:{"events.$[elem].active":false},},{arrayFilters:[{"elem.type":"event1"}]})