撤单经常失效

撤单命令提交后，撤单成功延迟很长很长，甚至都成交两个单了。单子都成交了才撤单。请老师看下什么问题，怎么解决OnBar(ArrayRef<Integer> indexs) { if (BarStatus == 2) { // 预埋卖单的撤单条件 if(delta_che_flag == False && cond_sell == 1 && cond_buy == 1 && cond2 == 1 && (High >= last_chengjiao_price + delta_che)) { ret = A_DeleteOrderEx(oid_sell); if (ret == True) { print( Text( oid_sell) + "预埋卖单的撤单条件"); delta_che_flag = True; } else { print(Text( oid_sell) + "预埋卖单的撤单条件失败"); } } } }//委托更新事件函数，参数ord表示更新的委托结构体 OnOrder(OrderRef ord) { if (ord.status == Enum_Canceled && delta_che_flag == True) { cond_sell = -1; delta_che_flag = False; print(Text( oid_sell) +"预埋卖单撤单成功"); } }}