Date.IsInPreviousNMonths(**dateTime** as any, **months** as number) as nullable logical
Indicates whether the given datetime value
dateTime occurs during the previous number of months, as determined by the current date and time on the system.
datetimezonevalue to be evaluated.
months: The number of months.
Determine if the month before the current system time is in the previous two months.
Date.IsInPreviousNMonths(Date.AddMonths(DateTime.FixedLocalNow(), -1), 2)