Selecting of day after the day user selected

I try to select the day after the day user selected. I need to select 2 days - one, that user selected and the next one. In order to do that I try to modify didSelectItemAtIndexPath in FSCalender.m
I do it like so

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath

{
    FSCalendarCell *cell = (FSCalendarCell *)[collectionView cellForItemAtIndexPath:indexPath];
    cell.dateIsSelected = YES;
    [cell performSelecting];

    FSCalendarCell *newCellToSelect = (FSCalendarCell *)[collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForRow:indexPath.row+1 inSection:indexPath.section]];
    [newCellToSelect performSelecting];

    NSDate *selectedDate = [self dateForIndexPath:indexPath];
    if (!_supressEvent) {
        [self didSelectDate:selectedDate];
    }
    [self selectCounterpartDate:selectedDate];
}

But this doesn't work. Can you please point me out, what am I doing wrong ?

[patchthecode]

You trying to select multiple dates?

Yes, automatically.

[WenchaoD]

@archiewahwah Try this

- (void)calendar:(FSCalendar *)calendar didSelectDate:(NSDate *)date
{
    NSDate *nextDate = [calendar dateByAddingDays:1 toDate:date];
    [calendar selectDate:nextDate scrollToDate:NO];
}

Make sure this line has been settled:

calendar.allowsMultipleSelection = YES;