How to set a page size with Ravereport

Question

I have a project in Delphi 2010 in which I use Ravereport to make PDF reports, my question and the following and possible to define the size Width Heigth from the PDF page.

I tried it but it makes a mistake:

var PWidth: Double;

PWidth := 20;
System.BaseReport.PageWidth := PWidth;

Answer 1

Solution to my problem:

procedure TfrmLogger.RvSystemBeforePrint(Sender: TObject);
begin
  with Sender as TBaseReport do
    begin
      Units := unInch;
      UnitsFactor := 1;
      SetPaperSize(DMPAPER_USER, 21, 29.7);
      Units := unCM;
      UnitsFactor := 2.54;
    end;
end;