arraySize and indicator for understund

[faustf]

hii have  this  script

//+------------------------------------------------------------------+
//|                                                        RPoint.mq4 |
//|                               Copyright © 2004, Poul_Trade_Forum |
//|                                                         Aborigen |
//|                                          http://forex.kbpauk.ru/ |
//+------------------------------------------------------------------+
#property copyright "Poul Trade Forum"
#property link      "http://forex.kbpauk.ru/"
#property indicator_chart_window
#property indicator_buffers 1
#property indicator_color1 Blue

//---- input parameters
extern int ReversPoint=50;
//---- buffers
double RBuffer[];
int Trend=1,InTrend,ttime;
double Points,Last_High, Last_Low;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
   Points = MarketInfo(Symbol(), MODE_POINT);
//---- indicator line
   SetIndexStyle(0,DRAW_SECTION,EMPTY,2,Pink);
   SetIndexBuffer(0,RBuffer);
   SetIndexEmptyValue(0,0);

//---- name for DataWindow and indicator subwindow label
   short_name="RPoint";
   IndicatorShortName(short_name);
   SetIndexLabel(0,short_name);

//----
   SetIndexDrawBegin(0,100);
   ArrayInitialize(RBuffer,0);
//----

   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//---- TODO: add your code here

//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int    counted_bars=IndicatorCounted(),i,shift;

//---- TODO: add your code here
   i=(Bars-counted_bars)-1;

   for(shift=i; shift>=0; shift--)
     {

      if(Time[shift]!=ttime)
        {
         InTrend=InTrend+1;
         ttime=Time[shift];
         RBuffer[shift]=0;
        }
      if(High[shift+1]>Last_High && Trend==1)
        {
         InTrend=1;
        }
      if(Low[shift+1]<Last_Low   && Trend==0)
        {
         InTrend=1;
        }
      if(High[shift+1]>Last_High)
        {
         Last_High=High[shift+1];
        }
      if(Low[shift+1]<Last_Low)
        {
         Last_Low=Low[shift+1];
        }
      if(Trend==1 && Low[shift+1]<Last_High-ReversPoint*Points && InTrend>1)
        {
         Trend=0;
         RBuffer[shift+InTrend]=High[shift+InTrend];
         //Print ("High  "+RBuffer[shift+InTrend]);
         Last_High=Low[shift+1];
         Last_Low=Low[shift+1];
         InTrend=1;
        }

      if(Trend==0 && High[shift+1]>Last_Low+ReversPoint*Points && InTrend>1)
        {
         Trend=1;
         RBuffer[shift+InTrend]=Low[shift+InTrend];
          //Print ("Low  "+RBuffer[shift+InTrend]);
         Last_Low=High[shift+1];
         Last_High=High[shift+1];
         InTrend=1;
          //Print ("Dimetion array  "+ ArraySize(RBuffer));
          //Print ("Dimetion array  "+ Last_High);
        }
      //----
      
     }
      
   return(0);
  }
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+

i try to understund  how  work them ,  when you applay at chart  , it draw over the chart  some line  , like zigzag indicator , i want  know  how many zigzag  it  do it , for  do that i  insert in  end of script  this part of  code

Print ("Dimetion array  "+ ArraySize(RBuffer));

but if  i change the variable

ReversPoint

set  1000 , for example , Arraysize return me  always  the same  number ?  why ????