timer event trigger

Hello
I tried to change the execution date for a Timer. But after changing the value , the timer is still not executing.

I used /bonita/API/bpm/timerEventTrigger?caseId={{caseId}}&p=0&c=10& to find out the eventInstanceId
then I updated the EVENT_TRIGGER_INSTANCE set EXECUTIONDATE = 1615140000000 WHERE EVENTINSTANCEID = 108344544;

But after changing the value still timer is not firing . I am using GMT time and date as reference. My Timezone is GMT +3.

Hi all,
Is there a way to retrieve a list of all passed (or archived) timer events in REST API?
Consider this example..I want all my timer event triggers to work as milestones..so that I know the workflow passed through them after executing. So, I wish to retrieve them either while the instance is executing or after it's completion. I tried with "API/bpm/timerEventTrigger?caseId=(caseId)&p=0&c=150" by giving it the "caseId" if it's executing or the "archived caseId" if it's finished. Both of them returned "200 ok" but with an empty payload.