指定された範囲の年月日より年月のテーブルを作成するには

完成イメージ

Clear(MonthsList);

//前前月の最終日を_LastDayOfPreviousMonthに挿入
UpdateContext({_days:Text(DatePicker_from.SelectedDate,"dd")});
UpdateContext({_LastDayOfPreviousMonth:DateAdd( DatePicker_from.SelectedDate,-_days)});

//Collect( MonthsList,{YearMonth:Text( DatePicker_from.SelectedDate,"yyyy/mm" )});
ForAll( 
    Sequence( DateDiff(_LastDayOfPreviousMonth,DatePicker_to.SelectedDate,Months)), 
    Collect( MonthsList,{YearMonth:Text( DateAdd( _LastDayOfPreviousMonth,Value,Months ),"yyyy/mm" )})
);