请教！！！

老师好！为什么索引、未成交数、委托时间等都有正常的返回值，但却显示“发单失败”？ Vars //此处添加变量 String my_tb("tbf_wd118552"); Integer accountIndex; Integer LastIndex; Integer nCount; //Integer InvalidInteger(); Numeric a; Numeric b; Numeric c; Global Numeric k; bool m; Defs //此处添加公式函数 Events //此处实现事件函数 //初始化事件函数，策略运行期间，首先运行且只有一次 OnInit() { A_BindTradeAccount(my_tb); } //Bar更新事件函数，参数indexs表示变化的数据源图层ID数组 OnBar(ArrayRef<Integer> indexs) { if (/*BarExistStatus() == 1*/ BarStatus() == 2 and close>open and MarketPosition() == 0) { //if (k==0 ) //{ a=IntPart((A_FreeMargin(accountIndex = 0)*0.32)/((close+MinMove()*5)*MarginRatio()*ContractUnit())); b=Q_AskPrice()-MinMove()*5; print("委托价格："+text(b)); m=A_SendOrder(Enum_Buy,Enum_Entry,a,b); print("发单"+IIFString(m,"成功","失败")); LastIndex = A_GetLastOpenOrderIndex(Enum_Buy,Enum_Entry); print("索引："+text(LastIndex)); print("手数："+text(a)); print("开仓资金："+text(A_FreeMargin(accountIndex = 0)*0.32)); print("可用资金："+text(A_FreeMargin(accountIndex = 0))); print("未成交数："+text(A_GetOpenOrderCount())); print("对手价:"+text(Q_AskPrice())); print("BAR状态:"+text(barstatus())); if (A_AccountDataExist(A_AccountIndex(A_AccountID())) == True) { print("账户有效"); } print("委托时间:"+text(A_OpenOrderTime())); //k=1; //} } if (A_GetOpenOrderCount()>0 and (CurrentTime() - A_OpenOrderTime())>=0.000010); { A_DeleteAccountOrder(); } }