How can open orders continue in same trading condition

External question — Stack Overflow Stack Exchange Author: linlin Original post: https://stackoverflow.com/questions/67487322 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I want to open orders by orders whenever a certain trading condition is met. I want to open pending orders in previous highest and lowest price. So, I tried like this: upper=iHigh(Symbol(),Period(),iHighest(Symbol(),Period(),MODE_HIGH,periods,0)); lower=iLow(Symbol(),Period(),iLowest(Symbol(),Period(),MODE_LOW,periods,0)); Comment("Upper: ",upper,"\nLower: ",lower); int openCount=0; int openpendCount=0; for( int i = OrdersTotal()-1; i >= 0 ; i--) { if (OrderSelect(i, SELECT_BY_POS) && // Only my orders : OrderMagicNumber() == 0 && // my magic number OrderSymbol() == _Symbol) // and my symbol { if(OrderType() == OP_SELL && OrderType() ==OP_BUY) // count market orders openCount++; if(OrderType() == OP_SELLLIMIT && OrderType() ==OP_BUYLIMIT) // count market orders openpendCount++; } } if(openCount ==0 && openpendCount == 0 ) { OrderSend(Symbol(), OP_SELLLIMIT,1,Ask+(upper-Ask), 3,0,0,"Sub Buy", MAGIC,0, Blue); OrderSend(Symbol(), OP_BUYLIMIT,1,Ask-(Bid-lower), 3,0,0,"Sub Buy", MAGIC,0, Blue); } But no success, Q: How can I make multiple new orders at the same time, and no more new orders when trade condition meet.

External answer — Stack Overflow Stack Exchange Author: PaulB Original post: https://stackoverflow.com/a/67500140 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. There are a number of problems with your code and it is difficult to know all the problems as you have not included your full code. However, try the following, it addresses the main issues I can see which are. You should only check once on the close of each new bar You need to check for successful selection of orders before working with them Do not check for a magic number of 0, this indicates manually placed orders You are mixing up && and || when checking your order types You are placing your orders at strange levels. You need to set them at the previously found levels (adjusted for spread for buy orders). int MAGIC=123; datetime TimeBar; int periods=50; int start() { if(TimeBar==Time[0]) return(0); double upper=iHigh(NULL, 0, iHighest(NULL, 0, MODE_HIGH, periods, 0)); double lower=iLow (NULL, 0, iLowest (NULL, 0, MODE_LOW , periods, 0)); Comment("Upper: ",upper,"\r\nLower: ",lower); int openOrders=0; int limitOrders=0; for(int i=OrdersTotal()-1; i>=0; i--) { if(OrderSelect(i, SELECT_BY_POS)) { if(OrderMagicNumber()!=MAGIC || OrderSymbol()!=Symbol()) continue; if(OrderType()==OP_SELL || OrderType()==OP_BUY) openOrders++; if(OrderType()==OP_SELLLIMIT || OrderType()==OP_BUYLIMIT) limitOrders++; } } if(openOrders==0 && limitOrders==0) { int res; res=OrderSend(Symbol(), OP_SELLLIMIT, 1, upper, 3, 0, 0, "Sub Sell", MAGIC, 0, clrBlue); res=OrderSend(Symbol(), OP_BUYLIMIT, 1, lower+(Ask-Bid), 3, 0, 0, "Sub Buy", MAGIC, 0, clrBlue); } TimeBar=Time[0]; return(0); } You will also need to address the problem that the EA could potentially try to open an order within MarketInfo(Symbol(), MODE_STOPLEVEL) of the current price which would cause the order to be rejected by the trade server. It is also good practice to check your OrderSend for errors.