Display MA Crossover Arrows

First of all a happy and prosperous New Year to all of you.

I am stuck in a problem that hopefully is quite easy to solve: I am trying to modify an existing code that displays an arrow each time two moving averages cross, to display the most recent arrow only. From what I understand I can not delete the previous arrows using buffers, so I figured that I might have to use one object instead and move it to the last occurrence. However I couldn’t succeed with this, so I am posting the original code and hopefully someone can help me out with this

//+------------------------------------------------------------------+
//|                                         EMA-Crossover_Signal.mq4 |
//|         Copyright © 2005, Jason Robinson (jnrtrading)            |
//|                   http://www.jnrtading.co.uk                     |
//+------------------------------------------------------------------+

/*
  +------------------------------------------------------------------+
  | Allows you to enter two ema periods and it will then show you at |
  | Which point they crossed over. It is more usful on the shorter   |
  | periods that get obscured by the bars / candlesticks and when    |
  | the zoom level is out. Also allows you then to remove the emas   |
  | from the chart. (emas are initially set at 5 and 6)              |
  +------------------------------------------------------------------+
*/   
#property copyright "Copyright © 2005, Jason Robinson (jnrtrading)"
#property link      "http://www.jnrtrading.co.uk"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Blue

double CrossUp[];
double CrossDown[];

extern int FasterEMA = 12;
extern int SlowerSMA = 24;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   SetIndexStyle(0, DRAW_ARROW, STYLE_SOLID,1);
   SetIndexArrow(0, 233);
   SetIndexBuffer(0, CrossUp);
   SetIndexStyle(1, DRAW_ARROW,STYLE_SOLID,1 );
   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 fasterEMAnow, SlowerSMAnow, fasterEMAprevious, SlowerSMAprevious, fasterEMAafter, SlowerSMAafter;
   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;
       
      fasterEMAnow = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i);
      fasterEMAprevious = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i+1);
      fasterEMAafter = iMA(NULL, 0, FasterEMA, 0, MODE_EMA, PRICE_CLOSE, i-1);

      SlowerSMAnow = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_CLOSE, i);
      SlowerSMAprevious = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_CLOSE, i+1);
      SlowerSMAafter = iMA(NULL, 0, SlowerSMA, 0, MODE_SMA, PRICE_CLOSE, i-1);
      
      if ((fasterEMAnow > SlowerSMAnow) && (fasterEMAprevious  SlowerSMAafter)) {
         CrossUp = Low - Range*0.5;     
      }
      else if ((fasterEMAnow  SlowerSMAprevious) && (fasterEMAafter < SlowerSMAafter)) {
         CrossDown = High + Range*0.5;   
      }
   }
   return(0);
}

Best regards,

CMEHH