Alert_SAR

//+------------------------------------------------------------------+
//|                                                    Alert_SAR.mq4 |
//|                                                          Kalenzo |
//|                                      bartlomiej.gorski@gmail.com |
//+------------------------------------------------------------------+
#property copyright "Kalenzo"
#property link      "bartlomiej.gorski@gmail.com"
extern int range = 1;
extern double step = 0.02;
extern double maximum = 0.2;
#property indicator_chart_window
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
 {
//----
  double sar = iSAR(Symbol(),0,step,maximum,0); 
  double psar = iSAR(Symbol(),0,step,maximum,1); 
  
  if( (sar > Open[0] && psar < Open[1]) || (sar < Open[0] && psar > Open[1]) )
  Alert(Symbol()+" SAR changed ");
//----
   return(0);
  }
//+------------------------------------------------------------------+