Set value to Start-Timer-Event in EventSubProcess dynamically

yeah. In both cases, i was passing it.

Scenario1:

{     
  "variables": {
    "timerDate": {
      "type": "Date",
      "value": "2019-01-31T10:11:00.000+0100"
    }
  }
}

Scenario2:

{
  "businessKey": "5c432441778531931cd639865",
  "variables": {
    "timerDate": {
      "type": "Date",
      "value": "2019-01-31T10:11:00.000+0100"
    }
  }
}