I want to put draw limit on trend line line for last 100 bar below is the code. Please Help

[fedoraproject]

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

//|                                     SwingMan HiLo Activator2.mq4 |

//|                                                         SwingMan |

//|                                               [e-mail] |

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

#property copyright "SwingMan"

#property link      "[e-mail]"

#property indicator_chart_window

//---- indicator settings

#property  indicator_buffers 2

#property  indicator_color1  Red

#property  indicator_color2  Blue

//---- input parameters ----------------------------------------------

extern int Period_HiLo = 10;

//--------------------------------------------------------------------

//---- indicator buffers

double BufferHighs[];

double BufferLows[];

//-- Arrays

double dHighs[],dLows[];

//-- variables

int iTrend;

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

//| Custom indicator initialization function                         |

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

int init()

  {

//-- Arrays

   ArraySetAsSeries(dHighs,true);

   ArraySetAsSeries(dLows,true);

//---- indicator buffers mapping

   SetIndexBuffer(0,BufferHighs);

   SetIndexBuffer(1,BufferLows);   

  

   //---- drawing settings   

   SetIndexStyle(0,DRAW_LINE,0,2);  // Highs

   SetIndexStyle(1,DRAW_LINE,0,2);  // Lows   

   IndicatorDigits(Digits);

   

   SetIndexDrawBegin(0,Period_HiLo);

   SetIndexDrawBegin(1,Period_HiLo);

//---- name for DataWindow and indicator subwindow label

   IndicatorShortName("SwingMan HiLoActivator2");

   Comment("SwingMan HiLoActivator2 (" + Period_HiLo +") ");

   

   SetIndexLabel(0,"Highs");

   SetIndexLabel(1,"Lows");

//--

   iTrend = 0;

   return(0);

  }

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

//| Custom indicator deinitialization function                       |

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

int deinit()

  {

   return(0);

  }

  

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

//| Custom indicator iteration function                              |

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

int start()

  {

   int counted_bars=IndicatorCounted();

   if (counted_bars<0) return(-1);

   if(Bars<=10) return(0);

   if (counted_bars>0) counted_bars--;   

   int limit = Bars - counted_bars;

   

   ArrayResize(dHighs,Bars);

   ArrayResize(dLows,Bars);

//----

   for (int i = 0; i <=limit-1; i++) 

   {

      dHighs[i] = iMA(NULL, 0, Period_HiLo, 0, MODE_SMA, PRICE_HIGH, i);

      dLows[i]  = iMA(NULL, 0, Period_HiLo, 0, MODE_SMA, PRICE_LOW, i);

   }

   

   for (i=limit-Period_HiLo; i >=0; i--) 

   {  

      BufferHighs[i] = EMPTY_VALUE;

      BufferLows[i] = EMPTY_VALUE;

      //-- first trend

      if (iTrend == 0) {

         if (Close[i] > dHighs[i]) iTrend = 1;

         else

         if (Close[i] < dLows[i]) iTrend = -1;

      }

      

      //-- up trend

      if (iTrend == 1) {

         if (Close[i] < dLows[i]) {

            BufferHighs[i] = dHighs[i];

            iTrend = -1;

         }

         else {

            BufferLows[i] = dLows[i];

         }   

      }

      else

      //-- down trend

      if (iTrend == -1) {

         if (Close[i] > dHighs[i]) {

            BufferLows[i] = dLows[i];

            iTrend = 1;

         }

         else {

            BufferHighs[i] = dHighs[i];

         }   

      }

   }   

//----

   return(0);

  }

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

[William Roeder]

1. Play video	Please edit your post. For large amounts of code, attach it.

   ---

2. ArrayResize(dHighs,Bars);
   ArrayResize(dLows,Bars);
   :
   if (Close[i] > dHighs[i]) iTrend = 1;

   Those two must be buffers not arrays. Resizing arrays will not shift existing values, but the if statement assumes they are.
   
3. Do not use separate a variable (iTrend.) After the first run, you must retrieve the trend for index one to be used on index 0. Either process bar zero never or only once.

   ---

4. int limit = Bars - counted_bars;
   for (int i = 0; i <=limit-1; i++) 
      :
      dHighs[i] = iMA(NULL, 0, Period_HiLo, 0, MODE_SMA, PRICE_HIGH, i);
   

   The look back length for MA is Period_HiLo. The look back length for trend is that plus 1. Do your lookbacks correctly.

   ---

5. Help you with what? You haven't stated a problem.