OnTester() and OnTesterStatistics() in MT4, work correctly?

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double OnTester()
  {
   int tester_method= 1;
   double ret=0.0;
   if(TesterStatistics(STAT_MIN_MARGINLEVEL) <100)  
      return -1001;
     }
}
when compiling, there is no error, but in strategy tester the value of  
TesterStatistics(STAT_MIN_MARGINLEVEL)

is always zero. does OnTester() works correctly in MT4?

if this problem persists, I think the only solution is converting the code to MT5, do you have any other suggestion?

 
Your topic has been moved to the section: MQL4 and MetaTrader 4
Please consider which section is most appropriate — https://www.mql5.com/en/forum/172166/page6#comment_49114893
 

Problem solved, OnTester also works correctly in MT4, but it doesn't contain all the statistics that MT5 has. for example STAT_MIN_MARGINLEVEL, STAT_SHARPE_RATIO, STAT_RECOVERY_FACTOR ,... are not available and results are always zero.

  
double OnTester()
  {

   double sharp_ratio =sharp_ratio_calculator();
   return sharp_ratio; // Return Sharpe Ratio for optimization
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double sharp_ratio_calculator()
  {
   int totalTrades = OrdersHistoryTotal();
   if(totalTrades <= 1)  // Ensure there are trades to analyze
      return 0;

   double returns[], totalProfit = 0.0, meanReturn = 0.0, variance = 0.0;

// Loop through all historical orders
   for(int i = 0; i < totalTrades; i++)
     {
      if(OrderSelect(i, SELECT_BY_POS, MODE_HISTORY))  // Select trade from history
        {
         double profit = OrderProfit();
         double balanceBefore = AccountBalance() - totalProfit; // Simulate balance before this trade
         double tradeReturn = balanceBefore > 0 ? profit / balanceBefore : 0.0;

         totalProfit += profit; // Update cumulative profit
         returns[i] = tradeReturn; // Store return for this trade
        }
     }

// Calculate mean of returns
   for(int i = 0; i < totalTrades; i++)
      meanReturn += returns[i];
   meanReturn /= totalTrades;

// Calculate variance (for standard deviation)
   for(int i = 0; i < totalTrades; i++)
      variance += MathPow(returns[i] - meanReturn, 2);
   double stdDev = MathSqrt(variance / totalTrades);

// Risk-free return (assumed 0 for simplicity)
   double riskFreeReturn = 0;

// Calculate Sharpe Ratio
   double sharpeRatio = (meanReturn - riskFreeReturn) / stdDev;
   return sharpeRatio;
  }

Here is a piece of code that calculates Sharpe Ratio

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