anchor.diff:                                                         >>
     F:FLAGS "=" vfrOneOfOptionFlags[OOOObj, F->getLine()]
                                                          <<
  -                                                          _PCATCH(mCVfrDataStorage.GetVarStoreName (_GET_CURRQEST_VARTINFO().mVarStoreId, &VarStoreName), L->getLine());
  -                                                          VarStoreGuid = mCVfrDataStorage.GetVarStoreGuid(_GET_CURRQEST_VARTINFO().mVarStoreId);
  -                                                          if (OOOObj.GetFlags () & 0x10) {
  -                                                            CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_STANDARD, F);
  -                                                            _PCATCH(mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
  -                                                                      EFI_HII_DEFAULT_CLASS_STANDARD,
  -                                                                       _GET_CURRQEST_VARTINFO(),
  -                                                                      VarStoreName,
  -                                                                      VarStoreGuid,
  -                                                                      _GET_CURRQEST_DATATYPE (),
  -                                                                      Val
  -                                                                      ), L->getLine());
  -                                                          }
  -                                                          if (OOOObj.GetFlags () & 0x20) {
  -                                                            CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_MANUFACTURING, F);
  -                                                            _PCATCH(mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
  -                                                                      EFI_HII_DEFAULT_CLASS_MANUFACTURING,
  -                                                                       _GET_CURRQEST_VARTINFO(),
  -                                                                      VarStoreName,
  -                                                                      VarStoreGuid,
  -                                                                      _GET_CURRQEST_DATATYPE (),
  -                                                                      Val
  -                                                                      ), L->getLine());
  +                                                          if (_GET_CURRQEST_VARTINFO().mVarStoreId != EFI_VARSTORE_ID_INVALID) {
  +                                                            _PCATCH(mCVfrDataStorage.GetVarStoreName (_GET_CURRQEST_VARTINFO().mVarStoreId, &VarStoreName), L->getLine());
  +                                                            VarStoreGuid = mCVfrDataStorage.GetVarStoreGuid(_GET_CURRQEST_VARTINFO().mVarStoreId);
  +                                                            if (OOOObj.GetFlags () & 0x10) {
  +                                                              CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_STANDARD, F);
  +                                                              _PCATCH(mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
  +                                                                        EFI_HII_DEFAULT_CLASS_STANDARD,
  +                                                                         _GET_CURRQEST_VARTINFO(),
  +                                                                        VarStoreName,
  +                                                                        VarStoreGuid,
  +                                                                        _GET_CURRQEST_DATATYPE (),
  +                                                                        Val
  +                                                                        ), L->getLine());
  +                                                            }
  +                                                            if (OOOObj.GetFlags () & 0x20) {
  +                                                              CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_MANUFACTURING, F);
  +                                                              _PCATCH(mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
  +                                                                        EFI_HII_DEFAULT_CLASS_MANUFACTURING,
  +                                                                         _GET_CURRQEST_VARTINFO(),
  +                                                                        VarStoreName,
  +                                                                        VarStoreGuid,
  +                                                                        _GET_CURRQEST_DATATYPE (),
  +                                                                        Val
  +                                                                        ), L->getLine());
  +                                                            }
                                                             }
                                                          >>
     {
  
positive.code:                                                           if (_GET_CURRQEST_DATATYPE() == EFI_IFR_TYPE_OTHER) {
                                                              _GET_CURRQEST_VARTINFO().mVarType = EFI_IFR_TYPE_BOOLEAN;
                                                            }
                                                            _PCATCH (gCVfrVarDataTypeDB.GetDataTypeSize (_GET_CURRQEST_DATATYPE(), &DataTypeSize), L->getLine(), "CheckBox varid is not the valid data type");
                                                            if (DataTypeSize != 0 && DataTypeSize != _GET_CURRQEST_VARSIZE()) {
                                                              _PCATCH (VFR_RETURN_INVALID_PARAMETER, L->getLine(), "CheckBox varid doesn't support array");
                                                            } else if ((mCVfrDataStorage.GetVarStoreType (_GET_CURRQEST_VARTINFO().mVarStoreId) == EFI_VFR_VARSTORE_BUFFER) &&
                                                                      (_GET_CURRQEST_VARSIZE() != sizeof (BOOLEAN))) {
                                                              _PCATCH (VFR_RETURN_INVALID_PARAMETER, L->getLine(), "CheckBox varid only support BOOLEAN data type");
                                                            }
                                                         >>
    {
      F:FLAGS "=" vfrCheckBoxFlags[CBObj, F->getLine()] ","
                                                         <<
                                                            _PCATCH(mCVfrDataStorage.GetVarStoreName (_GET_CURRQEST_VARTINFO().mVarStoreId, &VarStoreName), VFR_RETURN_SUCCESS, L, "Failed to retrieve varstore name");
                                                            VarStoreGuid = mCVfrDataStorage.GetVarStoreGuid(_GET_CURRQEST_VARTINFO().mVarStoreId);
                                                            Val.b = TRUE;
                                                            if (CBObj.GetFlags () & 0x01) {
                                                              CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_STANDARD, F);
                                                              _PCATCH(
                                                                mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
                                                                                    EFI_HII_DEFAULT_CLASS_STANDARD,
                                                                                    _GET_CURRQEST_VARTINFO(),
                                                                                    VarStoreName,
                                                                                    VarStoreGuid,
                                                                                    _GET_CURRQEST_DATATYPE (),
                                                                                    Val
                                                                                    ),
                                                                VFR_RETURN_SUCCESS,
                                                                L,
                                                                "No standard default storage found"
                                                                );
                                                            }
                                                            if (CBObj.GetFlags () & 0x02) {
                                                              CheckDuplicateDefaultValue (EFI_HII_DEFAULT_CLASS_MANUFACTURING, F);
                                                              _PCATCH(
                                                                mCVfrDefaultStore.BufferVarStoreAltConfigAdd (
                                                                                    EFI_HII_DEFAULT_CLASS_MANUFACTURING,
                                                                                    _GET_CURRQEST_VARTINFO(),
                                                                                    VarStoreName,
                                                                                    VarStoreGuid,
                                                                                    _GET_CURRQEST_DATATYPE (),
                                                                                    Val
                                                                                    ),
                                                                VFR_RETURN_SUCCESS,
                                                                L,
                                                                "No manufacturing default storage found"
                                                                );
                                                            }
                                                          >>
    }
  
negative.code:   >>
    L:OneOf                                              << OObj.SetLineNo(L->getLine()); >>
    vfrQuestionHeader[OObj] ","                          << //check data type
                                                            if (_GET_CURRQEST_VARTINFO().mVarStoreId != EFI_VARSTORE_ID_INVALID) {
                                                              _PCATCH (gCVfrVarDataTypeDB.GetDataTypeSize (_GET_CURRQEST_DATATYPE(), &DataTypeSize), L->getLine(), "OneOf varid is not the valid data type");
                                                              if (DataTypeSize != 0 && DataTypeSize != _GET_CURRQEST_VARSIZE()) {
                                                                _PCATCH (VFR_RETURN_INVALID_PARAMETER, L->getLine(), "OneOf varid doesn't support array");
                                                              }
                                                              _PCATCH(OObj.SetFlags (OObj.FLAGS(), _GET_CURRQEST_DATATYPE()), L->getLine());
                                                            }
                                                         >>
    { F:FLAGS "=" vfrOneofFlagsField[OObj, F->getLine()] "," }
    {
  