//返回SZ000002（万科A）在20110907的内盘
SetSysParam(PN_Stock(),'SZ000002');
SetSysParam(PN_Date(),inttodate(20110907));
SetSysParam(PN_Cycle(),cy_day());
SetSysParam(PN_Rate(),1);
SetSysParam(PN_RateDay(),inttodate(20110907));
return StockSell3();
//结果：19324399