//+------------------------------------------------------------------+
//|                                                          Num.mq4 |
//|                                              Copyright 2022, AM2 |
//|                                     https://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2022, AM2"
#property link      "https://www.forexsystems.biz"
#property version   "1.00"
#property strict
#property indicator_chart_window

input int Num=2;
input string IndName="Number";

int num=Num;
datetime t=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping

//---
   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 n=(int)iCustom(NULL,0,IndName,num,1);

   if(n>0 && t!=time[0])
     {
      num++;
      t=time[0];
     }

   Comment("\n Ind: ",n,
           "\n Num: ",num);

//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+