help to display indicator arrow in chart

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//+------------------------------------------------------------------+
//|                               Guppy Multiple Moving Averages.mq4 |
//|                              Copyright 2015, Dmitriy Kudryashov. |
//|                       https://www.mql5.com/ru/users/dlim0n4ik.dk |
//+------------------------------------------------------------------+
#property copyright "Copyright 2015, Dmitriy Kudryashov."
#property link      "https://www.mql5.com/ru/users/dlim0n4ik.dk"
#property version   "1.00"
#property strict
#property indicator_chart_window
#property indicator_buffers 15
#property indicator_plots   15
/*
Версия 1.00
- Реализация индикатора по стратегии Дерила Гуппи (Daryl Guppy).
Version 1.00
- Implementation of the indicator based on the Daryl Guppy strategy.
Версия 2.00
- Реализовано переключение вида отображения ЛИНИИ или СТРЕЛКИ;
- Добавлена возможность включение и выключение Main Moving Average.
Version 2.00
- Implemented switching of the display type LINE or ARROW;
- Added the ability to turn Main Moving Average on and off.

*/
//--- plot fMA0
#property indicator_label1  "fMA0：3"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrAqua
#property indicator_style1  STYLE_SOLID
#property indicator_width1  2
//--- plot fMA1
#property indicator_label2  "fMA1:5"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrAqua
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot fMA2
#property indicator_label3  "fMA2:8"
#property indicator_type3   DRAW_LINE
#property indicator_color3  clrAqua
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1
//--- plot fMA3
#property indicator_label4  "fMA3:10"
#property indicator_type4   DRAW_LINE
#property indicator_color4  clrDodgerBlue
#property indicator_style4  STYLE_SOLID
#property indicator_width4  2
//--- plot fMA4
#property indicator_label5  "fMA4:12"
#property indicator_type5   DRAW_LINE
#property indicator_color5  clrAqua
#property indicator_style5  STYLE_SOLID
#property indicator_width5  1
//--- plot fMA5
#property indicator_label6  "fMA5:15"
#property indicator_type6   DRAW_LINE
#property indicator_color6  clrBlue
#property indicator_style6  STYLE_SOLID
#property indicator_width6  2
//--- plot sMA0
#property indicator_label7  "sMA0:30"
#property indicator_type7   DRAW_LINE
#property indicator_color7  clrCrimson
#property indicator_style7  STYLE_SOLID
#property indicator_width7  2
//--- plot sMA1
#property indicator_label8  "sMA1:35"
#property indicator_type8   DRAW_LINE
#property indicator_color8  clrCrimson
#property indicator_style8  STYLE_SOLID
#property indicator_width8  1
//--- plot sMA2
#property indicator_label9  "sMA2:40"
#property indicator_type9   DRAW_LINE
#property indicator_color9  clrCrimson
#property indicator_style9  STYLE_SOLID
#property indicator_width9  1
//--- plot sMA3
#property indicator_label10  "sMA3:45"
#property indicator_type10   DRAW_LINE
#property indicator_color10  clrCrimson
#property indicator_style10  STYLE_SOLID
#property indicator_width10  1
//--- plot sMA4
#property indicator_label11  "sMA4:50"
#property indicator_type11   DRAW_LINE
#property indicator_color11  clrCrimson
#property indicator_style11  STYLE_SOLID
#property indicator_width11  4
//--- plot sMA5
#property indicator_label12  "sMA5:60"
#property indicator_type12   DRAW_LINE
#property indicator_color12  clrMagenta
#property indicator_style12  STYLE_SOLID
#property indicator_width12  4
//--- plot mMA
#property indicator_label13  "mMA:200"
#property indicator_type13   DRAW_LINE
#property indicator_color13  clrSilver
#property indicator_style13  STYLE_SOLID
#property indicator_width13  4
//--- plot BUY
#property indicator_label14  "BUY"
#property indicator_type14   DRAW_ARROW
#property indicator_color14  clrDeepSkyBlue
#property indicator_style14  STYLE_SOLID
#property indicator_width14  1
//--- plot SELL
#property indicator_label15  "SELL"
#property indicator_type15   DRAW_ARROW
#property indicator_color15  clrRed
#property indicator_style15  STYLE_SOLID
#property indicator_width15  1

enum ENUM_DISPLAY_STYLE {Line = 0, Arrow = 1};
input ENUM_DISPLAY_STYLE DiS = 1;
input bool UseMainMA = false;
//--- indicator buffers
double         fMA0Buffer[];
double         fMA1Buffer[];
double         fMA2Buffer[];
double         fMA3Buffer[];
double         fMA4Buffer[];
double         fMA5Buffer[];
double         sMA0Buffer[];
double         sMA1Buffer[];
double         sMA2Buffer[];
double         sMA3Buffer[];
double         sMA4Buffer[];
double         sMA5Buffer[];
double         mMABuffer[];
double         BUYBuffer[];
double         SELLBuffer[];

//--- Буферы напраления тренда Fast Moving Average
// --- Buffers of the Fast Moving Average trend direction
bool fastTrendUP = FALSE;
bool fastTrendDOWN = FALSE;
//--- Буферы напраления тренда Slow Moving Average
// --- Buffers of the trend direction Slow Moving Average
bool slowTrendUP = FALSE;
bool slowTrendDOWN = FALSE;

int Cont = 0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0, fMA0Buffer);
   SetIndexBuffer(1, fMA1Buffer);
   SetIndexBuffer(2, fMA2Buffer);
   SetIndexBuffer(3, fMA3Buffer);
   SetIndexBuffer(4, fMA4Buffer);
   SetIndexBuffer(5, fMA5Buffer);
   SetIndexBuffer(6, sMA0Buffer);
   SetIndexBuffer(7, sMA1Buffer);
   SetIndexBuffer(8, sMA2Buffer);
   SetIndexBuffer(9, sMA3Buffer);
   SetIndexBuffer(10, sMA4Buffer);
   SetIndexBuffer(11, sMA5Buffer);
   SetIndexBuffer(12, mMABuffer);


   SetIndexStyle(13, DRAW_ARROW, EMPTY, 1, clrLimeGreen);
   SetIndexArrow(13, 233);
   SetIndexBuffer(13, BUYBuffer);

   SetIndexStyle(14, DRAW_ARROW, EMPTY, 1, clrRed);
   SetIndexArrow(14, 234);
   SetIndexBuffer(14, SELLBuffer);
   Comment(WindowExpertName());
//--- setting a code from the Wingdings charset as the property of PLOT_ARROW
//PlotIndexSetInteger(13,PLOT_ARROW,159);
//PlotIndexSetInteger(14,PLOT_ARROW,159);

//---
   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 i;
   int limit = rates_total - prev_calculated;
   for(i = 0; i < limit; i++)
     {
      //--- Расчет Fast Moving Average -------------------------------------
      //--- Calculation Fast Moving Average --------------------------------
      double fMA0 = iMA(NULL, 0, 3, 0, MODE_EMA, PRICE_CLOSE, i);
      double fMA1 = iMA(NULL, 0, 5, 0, MODE_EMA, PRICE_CLOSE, i);
      double fMA2 = iMA(NULL, 0, 8, 0, MODE_EMA, PRICE_CLOSE, i);
      double fMA3 = iMA(NULL, 0, 10, 0, MODE_EMA, PRICE_CLOSE, i);
      double fMA4 = iMA(NULL, 0, 12, 0, MODE_EMA, PRICE_CLOSE, i);
      double fMA5 = iMA(NULL, 0, 15, 0, MODE_EMA, PRICE_CLOSE, i);
      //--------------------------------------------------------------------

      //--- Расчет Slow Moving Average -------------------------------------
      //--- Calculation  Slow Moving Average -------------------------------
      double sMA0 = iMA(NULL, 0, 30, 0, MODE_EMA, PRICE_CLOSE, i);
      double sMA1 = iMA(NULL, 0, 35, 0, MODE_EMA, PRICE_CLOSE, i);
      double sMA2 = iMA(NULL, 0, 40, 0, MODE_EMA, PRICE_CLOSE, i);
      double sMA3 = iMA(NULL, 0, 45, 0, MODE_EMA, PRICE_CLOSE, i);
      double sMA4 = iMA(NULL, 0, 50, 0, MODE_EMA, PRICE_CLOSE, i);
      double sMA5 = iMA(NULL, 0, 60, 0, MODE_EMA, PRICE_CLOSE, i);
      //--------------------------------------------------------------------

      if(DiS == 0)
        {
         //--- Присвоение буферу значений Fast Moving Average -----------------
         //--- Assigning values to a buffer  Fast Moving Average --------------
         fMA0Buffer[i] = fMA0;
         fMA1Buffer[i] = fMA1;
         fMA2Buffer[i] = fMA2;
         fMA3Buffer[i] = fMA3;
         fMA4Buffer[i] = fMA4;
         fMA5Buffer[i] = fMA5;
         //--------------------------------------------------------------------

         //--- Присвоение буферу значений Slow Moving Average -----------------
         //--- Assigning values to a buffer   Slow Moving Average -------------
         sMA0Buffer[i] = sMA0;
         sMA1Buffer[i] = sMA1;
         sMA2Buffer[i] = sMA2;
         sMA3Buffer[i] = sMA3;
         sMA4Buffer[i] = sMA4;
         sMA5Buffer[i] = sMA5;
         //--------------------------------------------------------------------

        }
      //--- Расчет Main Moving Average -------------------------------------
      //--- Calculation Main Moving Average --------------------------------
      double mMA = iMA(NULL, 0, 200, 0, MODE_EMA, PRICE_CLOSE, i);
      if(UseMainMA == true)
        {
         mMABuffer[i] = mMA;
        }
      if(UseMainMA == false)
        {
         mMABuffer[i] = EMPTY_VALUE;
        }
      //--------------------------------------------------------------------
      if(DiS == 1)
        {
         //--- Условия определения тренда по Fast Moving Average --------------
         //--- Conditions for determining the trend by Fast Moving Average ----
         if(fMA0 > fMA1 > fMA2 > fMA3 > fMA4 > fMA5)
           {
            fastTrendUP = TRUE;
            fastTrendDOWN = FALSE;
           }
         if(fMA0 < fMA1 < fMA2 < fMA3 < fMA4 < fMA5)
           {
            fastTrendUP = FALSE;
            fastTrendDOWN = TRUE;
           }
         //--------------------------------------------------------------------

         //--- Условия определения тренда по Slow Moving Average --------------
         //--- Conditions for determining the trend by Slow Moving Average ----


         if(sMA0 > sMA1 > sMA2 > sMA3 > sMA4 > sMA5)
           {
            slowTrendUP = TRUE;
            slowTrendDOWN = FALSE;
           }
         if(sMA0 < sMA1 < sMA2 < sMA3 < sMA4 < sMA5)
           {
            slowTrendUP = FALSE;
            slowTrendDOWN = TRUE;
           }
         //--------------------------------------------------------------------

         if(fastTrendUP == true && slowTrendUP == true && Cont != 1)
           {
            SELLBuffer[i] = High[i] + (40 * Point); //Sell Arrow
            Cont = 1;
           }

         if(fastTrendDOWN == true && slowTrendDOWN == true && Cont != 2)
           {
            BUYBuffer[i] = Low[i] - (40 * Point); //Buy Arrow
            Cont = 2;
           }

        }
     }
   return(rates_total);

  }
//+------------------------------------------------------------------+

I tried to modify an indicator，I hope when the condition is :fastTrendUP == true && slowTrendUP == true ,the buy arrow display in the chart,
when the condition is:  fastTrendDOWN == true && slowTrendDOWN == true,the sell arrow display in the chart.

how ever ，I tried for a long time, and there is always only one state of the arrow display in the chart. Any one can give me some help ,how to make the buy arrow and sell arrow all display in the chart ?



appreciate your help.


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