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Modify My EA Please - Dynamic Volume Size

MQL5 指标 专家 自动交易/指标调试

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指定

I need a dynamic lot size for my expert advisor with 3 input options:

1. fixed lot size (0.01)

if my account balance is $100,000 & I want to risk 0.01 lots per trade

2. Volume based on money ($1000)  Example: 

if my account balance is $100,000 & I want to risk $1000 of my account per trade (0.01 volume)

3. volume based on account percent (1%) Example: 

if my account balance is $100,000 & I want to risk 1% of my account per trade (0.01 volume)


Most of the code has already been done, it just doesn't do what i want it to...

Heres The Code:


input group "General Settings"                                  // General Setting Input Grouping
enum LOT_MODE_ENUM{                                            // Options
    LOT_MODE_FIXED,                                                  // Fixed Lots
    LOT_MODE_MONEY,                                                    // Lots Based On Money
    LOT_MODE_PCT_ACCOUNT                                          // Lots Based On % Of Account
};

input LOT_MODE_ENUM LotMode = LOT_MODE_FIXED;  // Lot Mode Option
input double   FixedLots              = 0.01;                     // Lots
input double   Money                = 1000;                     // Money
input double   PercentOfAccount      = 5;                          // Percent
input double   AccountBalance       = 100000;              // your account balance

    -------------------------Functions-------------------------------
// Calculate Lots
bool CalculateLots(double slDistance, double &lots){

   lots = 0.0;
   if(LotMode==LOT_MODE_FIXED){
   lots = FixedLots;
   }
   else{
      double tickSize = SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_SIZE);
      double tickValue = SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_VALUE);
      double volumeStep = SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_STEP);
     
      double riskMoney = LotMode==LOT_MODE_MONEY ? Money : AccountInfoDouble(ACCOUNT_BALANCE) * PercentOfAccount * 0.01;
      double moneyVolumeStep = (slDistance / tickSize) * tickValue * volumeStep;
     
      lots = MathFloor(riskMoney/moneyVolumeStep) * volumeStep;
   }
   // Check Calculated lots
   if(!CheckLots(lots)){return false;}
   
   return true;
}

// Check Lots For Min, Max And Step
bool CheckLots(double &lots){

   double min = SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN);
   double max = SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX);
   double step = SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_STEP);
   
   if(lots<min){
      Print("Lot Size Will Be Set To The Minimum Allowable Volume");
      lots = min;
      return true;
   }
   if(lots>max){
      lots = max;
   Print("Lot Size Will Be Set To The Maximum Allowable Volume");
   return false;
   }
   lots = (int)MathFloor(lots/step) * step;
   
   return true;
}

// Calculate Lots - Paste in between "calc sl & tp" & "Open buy positions"
double lots;
if(!CalculateLots(lastTick.bid-sl,lots)){return;}

// Calculate Lots - Paste in between "calc sl & tp" & "Open sell positions"
double lots;
if(!CalculateLots(sl-lastTick.ask,lots)){return;}

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