Вставка формулы в Word из C++ Builder

#include <vcl.h>
#pragma hdrstop

#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
#pragma link "Word_XP_srvr"
#include "ComObj.hpp"

TForm2 *Form2;
TWordApplication *WordApplication1;
TWordDocument * WordDocument1;
//---------------------------------------------------------------------------
_fastcall TForm2::TForm2(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm2::FormCreate(TObject *Sender)
{
    WordApplication1 = new TWordApplication(this);
    WordApplication1->ConnectKind = ckNewInstance;
    WordApplication1->AutoQuit = true;
    WordDocument1 = new TWordDocument(this);
    WordApplication1->Connect();
    WordDocument1->ConnectTo(WordApplication1->Documents->Add());
    WordApplication1->set_Visible(true);
    TOleString txt("EQ x=\\f(1;2)");
    WordDocument1->ActiveWindow->ActivePane->Selection->Fields->Add
        (
        WordDocument1->ActiveWindow->ActivePane->Selection->Range,
        (OleVariant)wdFieldEmpty,
        (OleVariant)txt,
        (OleVariant)false
        );
}
//---------------------------------------------------------------------------
void __fastcall TForm2::FormDestroy(TObject *Sender)
{
    WordApplication1->Free();
}