أحتاج مساعدة من الإخوان المبرمجين

//+------------------------------------------------------------------+
//|                                           gestion_du_capital.mq4 |
//|                                      Copyright 2015, hamza Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, hamza Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict
#property indicator_chart_window

input double Stop_Loss = 1.0950 ;
input int Gestion_Capital = 5 ;
 
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
double sprea = MarketInfo(Symbol(),MODE_SPREAD);

double V_P = MarketInfo(Symbol(),MODE_TICKVALUE);
double Valeur_spread = sprea * V_P ;
double N_P_B = ((Ask - Stop_Loss)* 10000)+Valeur_spread; 
double N_P_S = (Stop_Loss - Bid)* 10000;
double SL_B = V_P * N_P_B ;
double Formule_1_B = SL_B / Gestion_Capital;
double Formule_2_B = (0.1 / Formule_1_B) ;

 //Comment("spread : "+DoubleToStr(sprea/10,1));
 Comment(Formule_2_B);
 
 
   
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+

//--- input parameters
input double   STOP=1.2;
input double   STOP_VAL=5.0;

//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+
void OnStart()
  {
//---
   double Tick_Val=MarketInfo(Symbol(),MODE_TICKVALUE);
   int B_L=int(MathAbs((Ask-STOP))/Point);
   int S_L=int(MathAbs((STOP-Bid))/Point);
   double B_Lot=NormalizeDouble(STOP_VAL/(Tick_Val*B_L),2);
   double S_Lot=NormalizeDouble(STOP_VAL/(Tick_Val*S_L),2);
   
   Alert("Max Buy Lot :"+ DoubleToStr(B_Lot,2)+" Max Sell Lot :"+DoubleToStr(S_Lot,2));
   
  }
//+------------------------------------------------------------------+