bool buy = (ma1s1>ma2s1 && ma2s1>ma3s1 && iCustom(NULL,0,"Multi Ma 6 Symbols",0,1)>+delta);
 bool sell = ma1s1<ma2s1 && ma2s1<ma3s1 && iCustom(NULL,0,"Multi Ma 6 Symbols",0,1)<-delta);

//+------------------------------------------------------------------+
//|                                           Multi Ma 6 Symbols.mq4 |
//|                        Copyright 2013, MetaQuotes Software Corp. |
//|                                          http://www.mункцql5.com |
//+------------------------------------------------------------------+

#property copyright "Copyright 2013, MetaQuotes Software Corp."
#property link      "http://www.mункцql5.com"
#property version   "1.00"
#property strict
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red
#property indicator_width1  2
#property indicator_width2  2

extern string pair1 = "GBPJPY";         // символ 1
extern string pair2 = "GBPCHF";         // символ 2
extern string pair3 = "GBPCAD";         // символ 3
extern string pair4 = "AUDUSD";         // символ 4
extern string pair5 = "NZDUSD";         // символ 5
extern string pair6 = "EURUSD";         // символ 6

extern int    BarsCount=150;
extern int    period = 1;
//---- buffers
double MaBuffer[];
double SignalBuffer[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(0,MaBuffer);
   SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(1,SignalBuffer);
   SetIndexEmptyValue(0,0.0);
   SetIndexEmptyValue(1,0.0);
   SetIndexLabel(0,"MA");
   SetIndexLabel(1,"Signal");
   IndicatorShortName(" Multi Ma 6 Symbols ");
//---
   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[])
  {
//---
    int limit;
   int counted_bars=IndicatorCounted();
   
   //---- check for possible errors
   if(counted_bars<0) return(-1);
   //---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
 
   if(IsOptimization()==true || IsTesting()==true){Comment("В тестере будет ошибка деления на 0. описано - в справке по MarketInfo");return(0);}
//----
   double Point1 = MarketInfo(pair1,MODE_POINT);
   double Point2 = MarketInfo(pair2,MODE_POINT);
   double Point3 = MarketInfo(pair3,MODE_POINT);
   double Point4 = MarketInfo(pair4,MODE_POINT);
   double Point5 = MarketInfo(pair5,MODE_POINT);
   double Point6 = MarketInfo(pair6,MODE_POINT);

   //---- main loop
   for(int i=0; i<BarsCount; i++)
   {             
   MaBuffer[i] =(
                 (iMA(pair1,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair1,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point1+
                 (iMA(pair2,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair2,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point2+
                 (iMA(pair3,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair3,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point3+
                 (iMA(pair4,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair4,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point4+
                 (iMA(pair5,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair5,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point5+
                 (iMA(pair6,0,period,0,MODE_SMA,PRICE_CLOSE,i)-iMA(pair6,0,period,0,MODE_SMA,PRICE_CLOSE,i+1))/Point6
                 );
 
   SignalBuffer[i]=iMAOnArray(MaBuffer,0,2,0,MODE_SMA,i);
    }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+