I want to try Control transfer in PSoc 5, but never successful

Here is my firmware

  case 0xA2:
    USBFS_1_currentTD.wCount=32;
    
    USBFS_1_currentTD.count=32;
    
    averageVolts=117;//averageVolates type is uint32
    USBFS_1_currentTD.pData=averageVolts;
               
    requestHandled  = USBFS_1_InitControlRead();
    break;

   case 0xA3:
    USBFS_1_currentTD.wCount=32;
    
    USBFS_1_currentTD.count=32;

    USBFS_1_currentTD.pData=10;
    
    requestHandled  = USBFS_1_InitControlWrite();
       break;
    
    In PC

 CCyControlEndPoint* CtlEndpoint;

 CtlEndpoint=USBDevice->ControlEndPt;

 CtlEndpoint->Target=TGT_DEVICE;
 CtlEndpoint->ReqType=REQ_VENDOR;
 CtlEndpoint->Direction=DIR_FROM_DEVICE;
 CtlEndpoint->ReqCode=0xA2;
 CtlEndpoint->Value=0;
 CtlEndpoint->Index=0;
 PUCHAR buf=new UCHAR[32];//Receive data

 long buflen=32;
 
  
 ZeroMemory(buf,32);

 CtlEndpoint->XferData(buf,buflen);
 
 
 str.Format(_T("Voltagle=%4ld mV"), buf);
 
 dlg->SetDlgItemTextW(IDC_TEXTDEVINO, str);

Is there anything wrong with the code? What is difference between USBFS_1_currentTD.wCount=32; and

    
    USBFS_1_currentTD.count=32;