Handling OnAppointmentSend Event in the Same Office js Add-in Instance in Outlook

Currently, when the OnAppointmentSend event is triggered, it opens a new instance of the Office.js add-in in Outlook. This behavior prevents the new instance from communicating with the existing instance in the task pane, causing various issues. We would like the event handler to interact with the same instance in the task pane to ensure that data validation and other necessary steps can be performed seamlessly.