help me with my code

//-------------------------------------------------------------
//  Etasoft Inc. Forex EA and Script Generator version 7.x   EA
//-------------------------------------------------------------
// Keywords: MT4, Forex EA builder, create EA, expert advisor developer

#property copyright "Copyright © 2014-2019, Etasoft Inc. Forex EA Generator v7.x"
#property link      "http://www.forexgenerator.com/"

#include <stdlib.mqh>
#include <WinUser32.mqh>

// exported variables
extern double BuyLots4 = 0.01;
extern int BuyStoploss4 = 0;
extern int BuyTakeprofit4 = 0;
extern int Gap6 = -5;

extern double Multiply = 2;
double lastOrderLotSize = 0.0*Multiply;
//extern double BuyLots10 = lastOrderLotSize*Multiply;
extern int BuyStoploss10 = 0;
extern int BuyTakeprofit10 = 0;
int lastOrderMagicNumber = 0;

// local variables
double PipValue=1;    // this variable is here to support 5-digit brokers
bool Terminated = false;
string LF = "\n";  // use this in custom or utility blocks where you need line feeds
int NDigits = 4;   // used mostly for NormalizeDouble in Flex type blocks
int ObjCount = 0;  // count of all objects created on the chart, allows creation of objects with unique names
int current = 0;   // current bar index, used by Cross Up, Cross Down and many other blocks
int varylots[101]; // used by Buy Order Varying, Sell Order Varying and similar



int init()
{
    NDigits = Digits;
    
    if (false) ObjectsDeleteAll();      // clear the chart
    
    
    Comment("");    // clear the chart
    return (0);
}

// Expert start
int start()
{
    if (Bars < 10)
    {
        Comment("Not enough bars");
        return (0);
    }
    if (Terminated == true)
    {
        Comment("EA Terminated.");
        return (0);
    }
    
    OnEveryTick1();
    return (0);
}

void OnEveryTick1()
{
    PipValue = 1;
    if (NDigits == 3 || NDigits == 5) PipValue = 10;
   
    IfNoOrderExist12();
    IfGap6();
    int totalOrders = OrdersTotal();
    for (int i = totalOrders - 1; i >= 0; i--)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            lastOrderMagicNumber = OrderMagicNumber();
            break;
        }
    }
    int TotalOrder = OrdersTotal();
    for (int u = TotalOrder - 1; u >= 0; u--)
    {
        if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
        {
            lastOrderLotSize = OrderLots();
            break;
        }
    }
    
}

void IfNoOrderExist12()
{
    bool exists = false;
    for (int i=OrdersTotal()-1; i >= 0; i--)
    if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
        if (OrderSymbol() == Symbol())
        {
            exists = true;
        }
    }
    else
    {
        Print("OrderSelect() error - ", ErrorDescription(GetLastError()));
    }
    
    if (exists == false)
    {
        BuyOrder4();
        
    }
}

void BuyOrder4()
{
    Print("BuyOrder4()");
    double SL = Bid + BuyStoploss4*PipValue*Point;
    if (BuyStoploss4 == 0) SL = 0;
    double TP = Bid - BuyTakeprofit4*PipValue*Point;
    if (BuyTakeprofit4 == 0) TP = 0;
    int ticket = -1;
    if (true)
    ticket = OrderSend(Symbol(), OP_BUY, BuyLots4, Bid, 4, 0, 0, "My Expert", 1, 0, Red);
    else
    ticket = OrderSend(Symbol(), OP_BUY, BuyLots4, Bid, 4, SL, TP, "My Expert", 1, 0, Red);
    if (ticket > -1)
    {
        if (true)
        {
            bool sel = OrderSelect(ticket, SELECT_BY_TICKET);
            bool ret = OrderModify(OrderTicket(), OrderOpenPrice(), SL, TP, 0, Red);
            if (ret == false)
            Print("OrderModify() error - ", ErrorDescription(GetLastError()));
        }
            
    }
    else
    {
        Print("OrderSend() error - ", ErrorDescription(GetLastError()));
    }
}

void IfGap6()
{
    Print("Magic number terakhir : "+lastOrderMagicNumber);
    Print("ifgap6");
    for (int i=OrdersTotal()-1; i >= 0; i--)
    if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
        if (OrderSymbol() == Symbol() && OrderMagicNumber() == lastOrderMagicNumber)
        {
            if ((Gap6 < 0 && ((OrderType() == OP_BUY && Ask - OrderOpenPrice() < Gap6*PipValue*Point) ||
            (OrderType() == OP_SELL && OrderOpenPrice() - Bid < Gap6*PipValue*Point))) ||
            ((Gap6 > 0 && ((OrderType() == OP_BUY && Ask - OrderOpenPrice() > Gap6*PipValue*Point) ||
            (OrderType() == OP_SELL && OrderOpenPrice() - Bid > Gap6*PipValue*Point)))))
            {
                IfOrderDoesNotExist9();
                
            }
        }
    }
    else
    Print("OrderSelect() error - ", ErrorDescription(GetLastError()));
    
}

void IfOrderDoesNotExist9()
{
    Print("IfOrderDoesNotExist9()");
    bool exists = false;
    for (int i=OrdersTotal()-1; i >= 0; i--)
    if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES))
    {
        if (OrderType() == OP_SELL && OrderSymbol() == Symbol() && OrderMagicNumber() == lastOrderMagicNumber+1)
        {
            exists = true;
        }
    }
    else
    {
        Print("OrderSelect() error - ", ErrorDescription(GetLastError()));
    }
    
    if (exists == false)
    {
        BuyOrder10();
        
    }
}

void BuyOrder10()
{
    Print("sellorder10()");
    double SL = Bid + BuyStoploss10*PipValue*Point;
    if (BuyStoploss10 == 0) SL = 0;
    double TP = Bid - BuyTakeprofit10*PipValue*Point;
    if (BuyTakeprofit10 == 0) TP = 0;
    int ticket = -1;
    if (true)
    ticket = OrderSend(Symbol(), OP_BUY, lastOrderLotSize, Bid, 4, 0, 0, "My Expert", lastOrderMagicNumber+1, 0, Red);
    else
    ticket = OrderSend(Symbol(), OP_BUY, lastOrderLotSize, Bid, 4, SL, TP, "My Expert", lastOrderMagicNumber+1, 0, Red);
    if (ticket > -1)
    {
        if (true)
        {
            bool sel = OrderSelect(ticket, SELECT_BY_TICKET);
            bool ret = OrderModify(OrderTicket(), OrderOpenPrice(), SL, TP, 0, Red);
            if (ret == false)
            Print("OrderModify() error - ", ErrorDescription(GetLastError()));
        }
            
    }
    else
    {
        Print("OrderSend() error - ", ErrorDescription(GetLastError()));
    }
}



int deinit()
{
    if (false) ObjectsDeleteAll();
    
    
    return (0);
}