为什么买开仓，卖平今价格是跌停价

Vars Tick mytick; Global Integer timerID; Global Numeric BuyorSell; Global Integer ordL1; Array<Integer> orderId; Events OnInit() { SubscribeBar( "l2209.DCE","TICK",SystemDateTime);//SystemDateTime timerID = CreateTimer(5000,0); } OnTimer(Integer id,Integer millsecs) { If(id==timerID) { BuyorSell = IntPart( Rand(1,3));//取随机整数 PlotAuto("bos",BuyOrSell); } If(BuyOrSell==1) { A_SendOrderEx(Enum_sell,Enum_Entry,1,mytick.bidask1.askP,orderId); ordL1=orderId[0]; print("1: 1"); } } OnOrder(OrderRef ord) { If(ord.status==Enum_Filled)//全部成交 { If(ord.orderId==ordL1) { A_SendOrderEx(Enum_buy,Enum_ExitToday,1,ord.price-2,orderId); Print("2= 2"); } } } OnBar(ArrayRef<Integer> indexs) { GetTick(mytick); //Print("买1= "+Text(mytick.bidask1.bidp)); //Print("mai1= "+Text(mytick.bidask1.askp)); } print卖一买一到控制台价格没错，程序运行时无论买开、平空价格委托价格变成跌停价，多单开不了，空单平不了 只能手动撤单再平仓 各位大佬看看问题出在哪里？ 谢谢！