How to retrieve input parameters value in callback ?

[nono]

Hello,

how can I retrieve Param1 & Param2 values in my callback ?

{
vo_ws.BeginFunction(Param1,Param2,cb,vo_ws);
}


private void CallBackFunction(IAsyncResult ar)
{

MYWS vo_ws = (MYWS)ar.AsyncState;
vo_ws.EndFunction (ar);

}

thanks