Scrolling outside range issue

[apple-avadhesh]

Though I have provided range it still drags beyond limited range. What's the cause?
Let me know if I am doing something wrong here
e.g source

calendarWeekView.setupCalendar(numOfDays: visibleCell,
setDate: Date(),
allEvents: JZWeekViewHelper.getIntraEventsByDate(originalEvents: calendarItems),
scrollType: .sectionScroll,
scrollableRange: (Date(), Calendar.current.date(byAdding: .day, value: users.count - 1, to: Date())))
calendarWeekView.refreshWeekView()