Disable features date after selecting date

[MujtabaMK]

I want to disable only future dates not all dates currently my code is disabling all dates

func WWCalendarTimeSelectorShouldSelectDate(_ selector: WWCalendarTimeSelector, date: Date) -> Bool {
    print(date)
    let modifiedDate = Calendar.current.date(byAdding: . day, value: 31, to: date)!
    print(modifiedDate)
    if modifiedDate >= date{
        return false
    }else{
        return true
    }
}

I want to disable dates after 31 dates from selection