How to check the text frame have overflow?

I am using below code, its wrongly show text frame have over flow

UIDRef content = pageItems.GetRef(i);   

  InterfacePtr<IGraphicFrameData> graphicFrameData(content,  UseDefaultIID());

UIDRef storyUIDRef =          helper.GetTextModelRef(graphicFrameData);

                                                  InterfacePtr<ITextModel> TheTextModel(storyUIDRef, UseDefaultIID());

                                                  InterfacePtr<IFrameList> Frames(TheTextModel->QueryFrameList());

  Utils<ITextUtils> tUtil;

                                                  bool16 overSetted = tUtil->IsOverset(Frames);

and also i try using

InterfacePtr<ITextFrameColumn> textFrameColumn(Frames->QueryNthFrame(0));

bool16 overSetted = IsTextFrameOverset(textFrameColumn);//tUtil->IsOverset(Frames);

i manually changed QueryNthFrame(..), its wrongly show text frame have over flow.

Any one help me, above issue.