How to use electric chuck in native C++?

I am using the b-Cap Client library in native C++. I tried to operate COBOTTA's electric chuck with the code below, but it didn't work. crush. Please let me know where I am going wrong.

Although it is not shown here, the arm can be operated.
The electric chuck cannot be operated with HandMoveA and HandMoveH.HandChuck and HandUnChuck work.
ManualResetPreparation and MotionPreparation have been executed.

#include "/bcap_core/bCAPClient/bcap_client.h"  // b-cap client libarary header
...

bool CobottaController_HandMoveH()
{
    HRESULT hr;
    BSTR bstr;
    VARIANT vntParam;
    VARIANT vntReturn;
    VARIANT* pvntData;

    bstr = SysAllocString(L"HandMoveH");

    VariantInit(&vntParam);
    VariantInit(&vntReturn);

    vntParam.vt = (VT_VARIANT|VT_ARRAY);
    vntParam.parray = SafeArrayCreateVector(VT_VARIANT, 0, 3);
    SafeArrayAccessData(vntParam.parray, (void**)&pvntData);

    pvntData[0].vt = VT_R8;
    pvntData[0].dblVal = 25;  // force [N]
    pvntData[1].vt = VT_BOOL;
    pvntData[1].bVal = VARIANT_TRUE;    // TRUE : close FALSE : open
    pvntData[2].vt = VT_BSTR;
    pvntData[2].bstrVal = SysAllocString(L"DetectOn");  // option

    SafeArrayUnaccessData(vntParam.parray);

    hr = bCap_ControllerExecute(fd, hCtrl, bstr, vntParam, &vntReturn); // crush here

    sleep(2); // wait

    SysFreeString(bstr);
    VariantClear(&vntReturn);
    VariantClear(&vntParam);

    if ( SUCCEEDED(hr)) { return true; }
    else { return false; }

}

platfrom : windows11 compiler : MSVC 2022 community b-Cap Client Library : build to static library with CMake(MSVC)

DENSORobot / denso_cobotta_ros

How to use electric chuck in native C++? #22