FEMI Trailing stop

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//| FEMI TRAILING STOP.mq4 |
//| Copyright 2020, MetaQuotes Software Corp. |
//| https://www.mql5.com |
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input int InpTrailingStopPoints = 30; // Trailing stop points
double StopLoss;
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//| Expert initialization function |
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int OnInit() {
StopLoss = SymbolInfoDouble(Symbol(), SYMBOL_POINT)*InpTrailingStopPoints;
return(INIT_SUCCEEDED);
}
//—
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//| Expert deinitialization function |
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void OnDeinit(const int reason)
{
//—

}
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//| Expert tick function |
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void OnTick()
{
ApplyTrailingStop(Symbol(), StopLoss);
}
void ApplyTrailingStop(string symbol, double stopLoss) {

static int digits = (int)SymbolInfoInteger(symbol, SYMBOL_DIGITS);

// Trailing from the close prices
double buyStopLoss = NormalizeDouble(SymbolInfoDouble(symbol, SYMBOL_BID)-stopLoss, digits);
double sellStopLoss = NormalizeDouble(SymbolInfoDouble(symbol, SYMBOL_ASK)+stopLoss, digits);;

int count = OrdersTotal();
for (int i=count-1; i>=0; i–) {
if (OrderSelect(i, SELECT_BY_POS, MODE_TRADES)) {
if (OrderSymbol()==symbol) {
if (OrderType()==ORDER_TYPE_BUY && buyStopLoss<OrderOpenPrice() && OrderProfit()>0 && (OrderStopLoss()==0 || buyStopLoss>OrderStopLoss())) {
if (OrderModify(OrderTicket(), OrderOpenPrice(), buyStopLoss, OrderTakeProfit(), OrderExpiration())) {}
} else
if (OrderType()==ORDER_TYPE_SELL && sellStopLoss>OrderOpenPrice() && OrderProfit()>0 && (OrderStopLoss()==0 || sellStopLoss<OrderStopLoss())) {
if (OrderModify(OrderTicket(), OrderOpenPrice(), sellStopLoss, OrderTakeProfit(), OrderExpiration())) {}
}
}
}
}

}
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