我這有一個對當前頁面的設置代碼

var  

mmm,nnn,aaa:OleVariant;

begin

    mmm:=wdLine;
    nnn:=1;
    aaa:=wdFieldPage;
    WordApp.ActiveWindow.ActivePane.View.SeekView :=wdSeekCurrentPageHeader ;
    WordApp.Selection.Move(mmm,nnn);
    WordApp.Selection.ParagraphFormat.Alignment := wdAlignParagraphCenter;

    WordApp.Selection.InsertAfter('第');
    mmm:=wdCharacter;
    WordApp.Selection.Move(mmm,nnn);
    WordApp.Selection.Fields.Add(WordApp.Selection.Range,aaa,mmm,nnn);
    aaa:=wdFieldNumPages;
    WordApp.Selection.InsertAfter('頁/第');
    WordApp.Selection.Move(mmm,nnn);
    WordApp.Selection.Fields.Add(WordApp.Selection.Range,aaa,mmm,nnn);

    WordApp.Selection.InsertAfter('頁');
    WordApp.ActiveWindow.ActivePane.View.SeekView := wdSeekMainDocument;

end;

可是只能修改第一頁的，怎么修改后面的頁面的頁眉？