Hi @Anonymous ,
Please consider set the OnSelect property fo the dropdownCalendarSelection1 box to following:
/*retrieves calendar events for all days in current month view and selected calendar
_minDate and _maxDate act as markers to prevent duplicate data collection*/
If(IsBlank(_userDomain),
UpdateContext({_showLoading: true});
Set(_userDomain, Right(User().Email, Len(User().Email) - Find("@", User().Email)));
Set(_dateSelected, Today());
Set(_firstDayOfMonth, DateAdd(Today(), 1 - Day(Today()), Days));
Set(_firstDayInView, DateAdd(_firstDayOfMonth, -(Weekday(_firstDayOfMonth) - 2 + 1), Days));
Set(_lastDayOfMonth, DateAdd(DateAdd(_firstDayOfMonth, 1, Months), -1, Days))
);
Set(_calendarVisible, false);
UpdateContext({_showLoading: true});
Set(_myCalendar, LookUp(Office365Outlook.CalendarGetTables().value, DisplayName="Calendar")); /* <-- Modify formula here */
Set(_minDate, DateAdd(_firstDayOfMonth, -(Weekday(_firstDayOfMonth) - 2 + 1), Days));
Set(_maxDate, DateAdd(DateAdd(_firstDayOfMonth, -(Weekday(_firstDayOfMonth) - 2 + 1), Days), 40, Days));
ClearCollect(MyCalendarEvents, Office365Outlook.GetEventsCalendarViewV2(_myCalendar.Name, Text(_minDate, UTC), Text(_maxDate, UTC)).value);
UpdateContext({_showLoading: false});
Set(_calendarVisible, true)
Please take a try with above solution, check if the issue is solved.
Best regards,