IINWMARROWS alert

//+------------------------------------------------------------------+
//|                                                  IINWMARROWS.mq4 |
//|                                           Based on EMA_CROSS.mq4 |
//|                      Copyright © 2006, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//|                           Last little modified by Iin Zulkarnain |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net"
//----
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Green
#property indicator_color2 Red
#property indicator_width1 0
#property indicator_width2 0
//----
double CrossUp[];
double CrossDown[];
extern int FasterMA=  5;
extern int SlowerMA=  8; 
extern string note1 = "Faster/Slower Mode Option",
              note2 = "0=sma, 1=ema, 2=smma, 3=lwma";
extern int FasterMode=1; //0=sma, 1=ema, 2=smma, 3=lwma
extern int SlowerMode=1; //0=sma, 1=ema, 2=smma, 3=lwma
extern string note3 = "Your Alert Options",
              note4 = "true using your wav file",
              note5 = "false using default alert";
extern bool YourAlert = false;

 double alertTag;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, EMPTY);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW, EMPTY);
   SetIndexArrow(1, 234);
   SetIndexBuffer(1, CrossDown);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- 
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
  int start() 
  {
   int limit, i, counter;
   double fasterMAnow, slowerMAnow, fasterMAprevious, slowerMAprevious, fasterMAafter, slowerMAafter;
   double Range, AvgRange;
   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;
     for(i=0; i<=limit; i++) 
     {
      counter=i;
      Range=0;
      AvgRange=0;
      for(counter=i ;counter<=i+9;counter++)
        {
         AvgRange=AvgRange+MathAbs(High[counter]-Low[counter]);
        }
      Range=AvgRange/10;
      fasterMAnow=iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i);
      fasterMAprevious=iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i+1);
      fasterMAafter=iMA(NULL, 0, FasterMA, 0, FasterMode, PRICE_CLOSE, i-1);
//----
      slowerMAnow=iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_OPEN, i);
      slowerMAprevious=iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_OPEN, i+1);
      slowerMAafter=iMA(NULL, 0, SlowerMA, 0, SlowerMode, PRICE_OPEN, i-1);
        if ( (fasterMAnow > slowerMAnow) && (fasterMAprevious < 
slowerMAprevious) && (fasterMAafter > slowerMAafter)) {
         CrossUp[i] = Low[i] - Range*0.5;
         if ( alertTag!=Time[0])
         {
         if (YourAlert == false)
            {
            Alert(Symbol(),"  M",Period()," IINWMARROWS BUY");
            }
         else
            {
            PlaySound("alert1.wav");// buy wav
            }
         }
          alertTag = Time[0];
      }
      else if ((fasterMAnow < slowerMAnow) && (fasterMAprevious > 
slowerMAprevious) && (fasterMAafter < slowerMAafter)) {
         CrossDown[i] = High[i] + Range*0.5;
         if ( alertTag!=Time[0])
         {
          if (YourAlert == false)
             {
             Alert(Symbol(),"  M",Period()," IINWMARROWS SELL");
             }
          else
             {
             PlaySound("alert2.wav"); //sell wav
             }
         }
          alertTag = Time[0];
      }
   }
   return(0);
}

     
//+------------------------------------------------------------------+