onTimeSheetCreate is not not working

Hi Team,

The product for timer is not working!

exports = {
onTimesheetCreateCallback: function(payload) {
console.log("Logging arguments from onTimesheetCreate event: " + JSON.stringify(payload));
}
}



    "service_ticket": {

      "location": {

        "ticket_sidebar": {

          "url": "index.html",

          "icon": "icon.svg"

        }

      },

      "events": {

        "onTimesheetCreate": {

          "handler": "onTimesheetCreateCallback"

        }

      }

    }

Can anyone help me out here?

Thank you.