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IncMonth ​

IncMonth returns the given date, incremented by the number of months given as the ANumberOfMonths parameter.

Declaration: Function IncMonth(const AValue: TDateTime; const ANumberOfMonths: Integer): TDateTime;

This is a simple example.

pascal
procedure OnMapEvent(var Value:Variant);
begin
 //Returns a date incremented by 16 months
  Value := IncMonth(Date, 16);
end;