C++builder

请问C++builder高手:
  lyrMyLayer = Map1->Layers->CreateLayer(WideString("Cars"),EmptyParam,position,EmptyParam,EmptyParam);
  lyrMyLayer->Selectable =true;
  Map1->Layers->AnimationLayer = lyrMyLayer;
为什么执行" Map1->Layers->AnimationLayer = lyrMyLayer;"后,"AnimationLayer"的指针仍是空的,没有指向"lyrMyLayer"
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