函数反回一个自定义的数据数组类型时出错 invalid point

function ModelMan.GetDimInfo(sideId: string): ArrPath;
var
  side:EnumSides;
  objDimPers:ModelPerspective;
  obj,rawObj,re:ArrPath;
  sideInfo:ModelSideInfo;
  key:integer;
begin
  side:=XY;
  if sideId='XY' then side:=XY;
  if sideId='XZ' then side:=XZ;
  if sideId='YX' then side:=YX;
  if sideId='YZ' then side:=YZ;
  if sideId='ZX' then side:=ZX;
  if sideId='ZY' then side:=ZY;  objDimPers:=ModelPerspective.Create;  objDimPers.SetVisibleMode(true);  obj:=objDimPers.Translation(Self.GetPaths,side);  result:=obj;  objDimPers.SetMeasureMode(false);
  //反回一个自定义数组
  rawObj:=objDimPers.Translation(Self.GetDimPaths,side);  setlength(re,high(rawObj));
  for key:=0 to high(rawObj)-1 do
  begin
    sideInfo:=rawObj[key].GetSideInfo(side);
    if sideInfo.GetVisible then
       //只要经过这处理在反回时    
       re[key]:=rawObj[key];
  end;  GetDimInfo:=re;--------------------->Invalid pointer error!
 
  请各位大侠指点,小弟在线等带.相当着急,拜托了!end;