Changing Adapter NetConnectionID using IWBemServices in Visual-C++ - c++

Question

I am trying to change the NetConnectionID value of a network adapter by creating an instance of the Win32_NetworkAdapter class using IWBemServices. I am locating the adapter by its DeviceId and then trying to put the new NetConnectionID into the instance.
I am not getting any errors, but the NetConnectionID remains unchanged.
This is what my function currently looks like:
int CIPConfigModule::setAdapterName(CString CAdapterName, unsigned int idAdapter)
{
int bNoErrors = NO_ERROR;
IWbemClassObject *pNewInstance = NULL;
IWbemClassObject *pObjectClass = NULL;
IWbemContext *pCtx = NULL;
IWbemCallResult *pResult = NULL;
// Get the class definition.
string strIndex = std::to_string((long double)idAdapter);
string strIndexCommand = "Win32_NetworkAdapter.DeviceID=\"";
strIndexCommand.append(strIndex).append("\"");
CString CSIndexCommand = strIndexCommand.c_str();
// BSTR PathToClass = SysAllocString(L"Example");
HRESULT hRes = m_pSvc->GetObject((bstr_t)CSIndexCommand, 0, pCtx,
&pObjectClass, &pResult);
if (hRes != WBEM_S_NO_ERROR){
bNoErrors=ERROR_ATTEMPTING_TO_CHANGE_NAME;
return bNoErrors;
}
// Create a new instance.
pObjectClass->SpawnInstance(0, &pNewInstance);
pObjectClass->Release(); // Don't need the class any more
VARIANT v;
VariantInit(&v);
// Set the NetConnectioID property.
V_VT(&v) = VT_BSTR;
V_BSTR(&v) = CAdapterName.AllocSysString();
//V_BSTR(&v) = SysAllocString(L"Testing");
BSTR KeyProp = SysAllocString(L"NetConnectionID");
pNewInstance->Put(KeyProp, 0, &v, 0);
SysFreeString(KeyProp);
VariantClear(&v);
// Other properties acquire the 'default' value specified
// in the class definition unless otherwise modified here.
// Write the instance to WMI.
hRes = m_pSvc->PutInstance(pNewInstance, 0, pCtx, &pResult);
pNewInstance->Release();
if (hRes != WBEM_S_NO_ERROR){
bNoErrors=ERROR_ATTEMPTING_TO_CHANGE_NAME;
return bNoErrors;
}
return bNoErrors;
}
Does anyone have an idea of what I could be missing?