refetchevent fullcalendar不工作或不知道在哪里打电话

I am calling after ajax event but not getting any data updation on calendar: for example: if I am making date from 10 to 12 then after calling refetchevent it should show me colored event from 10 to till 12 but it remain on 10 and not moving.I am calling after ajax event but not getting a