Send C++ Structure to MSMQ Message

Question

Hi, I am trying to send the below structure through
MSMQ Message

typedef struct
{
    char cfiller[7]; 
    short MsgCode;
    char cfiller1[11];
    short MsgLength;
    char cfiller2[2]; 
} MESSAGECODE; 

typedef struct
{
    MESSAGECODE Header;
    char           DealerId[16];
    char           GroupId[16];
    long           Token;
    short          Periodicity;
    double         Deposit; 
    double         GrossExposureLimit;
    double         NetExposureLimit;
    double         NetSaleExposureLimit;
    double         NetPositionLimit;
    double         TurnoverLimit;
    double         PendingOrdersLimit;
    double         MTMLossLimit;
    double         MaxSingleTransValue;
    long           MaxSingleTransQty;
    double         IMLimit;
    long           NetQuantityLimit;
} LIMITUPDATE; 

void main()
{
  //
  // create queue
  // open queue
  // send message
  //
  OleInitialize(NULL); // have to init OLE
  //
  // declare some variables
  //

  IMSMQQueueInfoPtr qinfo("MSMQ.MSMQQueueInfo");
  IMSMQQueuePtr qSend;
  IMSMQMessagePtr m("MSMQ.MSMQMessage");
  LIMITUPDATE l1;
  l1.Header.MsgCode=26001;
  l1.Header.MsgLength=150;
  qinfo->PathName = ".\\private$\\q99";  
  m->Body = l1;
  qSend = qinfo->Open(MQ_SEND_ACCESS, MQ_DENY_NONE);
  m->Send(qSend);
  qSend->Close();
}

while compiling i am getting the following error.

Error 2 error C2664: 'IMSMQMessage::PutBody' : cannot convert parameter 1 from 'LIMITUPDATE' to 'const _variant_t &' c:\temp\msmq\msmq.cpp 58 msmq

thank you.