我使用Xiangqi 1.0 中国象棋的DELPHI控件，但编译出错.急！(100分)

我使用Xiangqi 1.0 中国象棋的DELPHI控件，但编译出错：
function GetPieceBitmap(PieceIndex: Cardinal):TBitmap;
function GetBoard(XPos, YPos: Cardinal)PieceInfo;
....
property PieceBitmap[PieceIndex: Cardinal]:TBitmap read GetPieceBitmap;
property Board[XPos, YPos: Cardinal]PieceInfo read GetBoard write SetBoard; default;
错误信息：
[Error]Xiangqi.pas(173)ublished property 'PieceBitmap' cannot be of type ARRAY
[Error]Xiangqi.pas(174)ublished property 'Board' cannot be of type ARRAY
我用的是DELPHI5.0，能否告知什么原因，怎样解决？
急！

function GetPieceBitmap(PieceIndex: Cardinal):TBitmap;
function GetBoard(XPos, YPos: Cardinal)PieceInfo;
应定义在 private
property PieceBitmap[PieceIndex: Cardinal]:TBitmap read GetPieceBitmap;
property Board[XPos, YPos: Cardinal]PieceInfo read GetBoard write SetBoard; default;
应定义在 public

接受答案了.