I am trying to run a function when user selects a date range in MatDateRangePicker. https://material.angular.io/components/datepicker/api
Here is the stackblitz https://stackblitz.com/edit/angular-gxbc8x?file=src/app/date-range-picker-overview-example.html
But nothing happens, no event is fired when date range is selected. How can I attach the hello() function when user selects a date range?