Here is the code, you can either copy & paste it or import the file. In the attached file I set the variables so that you can change them each time you launch the indicator, without having to modify the code.

ONCE AvgCross = 0
ONCE DayCount = 0
ONCE Offset   = 20 * pipsize                                  //Distance from High/Low to display arrows
ONCE FastSma  = 20
ONCE SlowSma  = 50
ONCE AvgType  = 0                                             //0 = sma   (see table at https://www.prorealcode.com/documentation/average/)
ONCE MaxDays  = 5                                             //Display arrows for max 5 consecutive days
FastAvg = average[FastSma,AvgType]
SlowAvg = average[SlowSma,AvgType]
IF FastAvg CROSSES OVER SlowAvg THEN
   AvgCross = 1                                               //1  = bullish crossing
   DayCount = 0
ELSIF FastAvg CROSSES UNDER SlowAvg THEN
   AvgCross = -1                                              //-1 = Bearish crossing
   DayCount = 0
ENDIF
IF AvgCross = 1 THEN
   DayCount = DayCount + 1                                    //Increment counter at each new bullish candlestick
   DRAWARROWUP(barindex, high + Offset) COLOURED(50,205,50)
   IF DayCount = MaxDays THEN                                 //Stop counting and drawing arrows after MAXDAYS have elapsed
      DayCount = 0
      AvgCross = 0
   ENDIF
ELSIF AvgCross = -1 THEN
   DayCount = DayCount + 1                                    //Increment counter at each new bearish candlestick
   DRAWARROWDOWN(barindex, low - Offset) COLOURED(255,0,0)
   IF DayCount = MaxDays THEN                                 //Stop counting and drawing arrows after MAXDAYS have elapsed
      DayCount = 0
      AvgCross = 0
   ENDIF
ENDIF
RETURN

I only tested it on EurUsd DAILY.

Roberto