EA Code Query

[Fruit B]

I tried the code below to close half the open position once my unrealized profits exceed $200. 
This did not happen to my trades.

Can anyone enlighted why so how what went wrong?

I get the error message Error Opening order 129. 

How can i resolve this?

THanks! 

//+----------------------------------------------------------------+

//|                                            50% Take Profit.mq4 |
//|                        Copyright 2023, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2023, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict

extern int fast_ma_period = 10; // fast MA period
extern int slow_ma_period = 20; // slow MA period
extern int magic_number = 1234; // unique identifier for this EA

//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
{
    //---

    //---
    return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
    //---

}
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
{
    double unrealized_profit = AccountInfoDouble(ACCOUNT_PROFIT);
    double open_profit = 0;
    int total_positions = OrdersTotal();

    // Calculate open profit
    for (int i = 0; i < total_positions; i++)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            open_profit += OrderProfit();
        }
    }

    // Check if unrealized profit is greater than $200
    if (unrealized_profit >= 200)
    {
        // Calculate position size for selling half of positions
        double lot_size = NormalizeDouble(AccountBalance() * 0.5 / 20000, 2);

        // Sell half of positions
        for (int i = 0; i < total_positions; i++)
        {
            if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
            {
                if (OrderType() == OP_BUY && OrderProfit() > 0)
                {
                    int ticket = OrderTicket();
                    double volume = OrderLots() * lot_size;
                    if (OrderSend(Symbol(), OP_SELL, volume, Ask, 3, 0, 0, "Close half", magic_number, 0, Red) == -1)
                    {
                        Print("Error opening order: ", GetLastError());
                    }
                }
                else if (OrderType() == OP_SELL && OrderProfit() > 0)
                {
                    int ticket = OrderTicket();
                    double volume = OrderLots() * lot_size;
                    if (OrderSend(Symbol(), OP_BUY, volume, Bid, 3, 0, 0, "Close half", magic_number, 0, Green) == -1)
                    {
                        Print("Error opening order: ", GetLastError());
                    }
                }
            }
        }
    }
    
}

[Carl Schreiber]

If your program does not do what it should the debugger will tell you where went what wrong:

Code debugging:  https://www.metatrader5.com/en/metaeditor/help/development/debug
Error Handling and Logging in MQL5:  https://www.mql5.com/en/articles/2041
Tracing, Debugging and Structural Analysis of Source Code, scroll down to: "Launching and Debuggin": https://www.mql5.com/en/articles/272

It's faster..

[Michael Lewis Devereux]

How do you accept data. 

one direction retracement entry's, both direction reverse entry tp. if the most previous V2 had no tp so all 200 positions held entry 1 direction.

1 position reverse entry tp, lot increase manual or auto

200 simultaneous pending trades tp x2 lot manual

200 simultaneous pending trades tp reverse 200 simultaneous pending trades tp x2 account/lot size manual.

BOTH DIRECTIONS - simultaneous pending trades start 1 position x2x2x2, increasing/decreasing the simultaneous pending trades limit 25%/50% each time. adjusting based on ration of buy to sell entry's+ distance/shapes/patterns.

[Daniel Cioca]

Fruit B:

I tried the code below to close half the open position once my unrealized profits exceed $200. 
This did not happen to my trades.

Can anyone enlighted why so how what went wrong?

I get the error message Error Opening order 129. 

How can i resolve this?

THanks! 

Because you are trying to sell at Ask. We Buy at Ask and Sell on Bid. 

[Fruit B]

Thank you. :)