怎样给qreport.pagesize付值？(100分)

TQRPaperSize = (Default, Letter, LetterSmall, Tabloid, Ledger, Legal,
Statement, Executive, A3, A4, A4Small, A5, B4, B5, Folio,
Quarto, qr10X14, qr11X17, Note, Env9, Env10, Env11, Env12,
Env14, CSheet, DSheet, ESheet, Custom)
property PaperSize : TQRPaperSize

是对象 怎样把 'ledger'纸张类型给它？

100分求解答。

uses QRPrntr;
QuickRep.Page.PaperSize := A4;

给人抢了