Indicator for storing price of seconds ago in array. Array doesn't work.

[Marcelo Peres]

Good afternoon!

I'm trying to build an indicator that stores the price of each second ago in an array. Then, I intend to get the price of, for example, 5 seconds ago, accessing the array L[5].... I made this code below, but I can't access the array. If it's L[0], then it works....

Where am I going wrong or what is missing? Someone help me?!

Thank you all!

#property copyright "Copyright 2022, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property indicator_chart_window
#property indicator_buffers 1


enum ENUM_ANCORA
 {
 
 
  _ANCHOR_LEFT_UPPER   = 0,    // Canto Superior Esquerdo
  _ANCHOR_LEFT_LOWER   = 2,    // Canto Inferior Esquerdo
  _ANCHOR_RIGHT_LOWER  = 4,    // Canto Inferior Direito
  _ANCHOR_RIGHT_UPPER  = 6     // Canto Superior Direito
 
 
 };
 
  
double L[];

input int                               Frequencia_Avaliacao         = 1;          // Frequência de avaliações (segundos) - Frequency of reviews in seconds
input int                               Distancia_preco_secs         = 5;          // Distância em segundos do preço - Price distance in seconds
input bool                             Mostrar_Painel                  = true;      // Mostrar Painel
input ENUM_ANCORA             Anchoragem                      = 0;          // Posição do Painel
input color                            Cor_do_Texto                    = clrYellow;  // Cor Do Texto

datetime LastTime,NextTime;
double LastClose;

string cod = "GUI123";
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {

  
   LastTime  = TimeCurrent();
   LastClose = iClose(_Symbol,0,0);
 // int x = Anchoragem  == 2 ? 5 : 
   NextTime  = LastTime+Frequencia_Avaliacao;
   

   SetIndexBuffer(0,L,INDICATOR_DATA);
   ArraySetAsSeries(L,true);
   
   
   return(INIT_SUCCEEDED);
  }
long width, height, Last_Height,Last_Width;
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
bool xx = false;


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[])
  {
//---
 
  
   

   if(TimeCurrent() >= NextTime)
    {
    LastTime = NextTime;
    NextTime = LastTime+Frequencia_Avaliacao; // Frequency of reviews in seconds
    LastClose = iClose(_Symbol,0,0);
    L[Distancia_preco_secs] = LastClose;
    
   
    
   
   
    ObjectSetString(0,cod+"Last_Time",OBJPROP_TEXT,"Ultima Atualização: "+TimeToString(LastTime,TIME_DATE|TIME_MINUTES|TIME_SECONDS));
    ObjectSetString(0,cod+"Next_Time",OBJPROP_TEXT,"Próxima Atualização: "+TimeToString(NextTime,TIME_DATE|TIME_MINUTES|TIME_SECONDS));
    ObjectSetString(0,cod+"Ultimo_Preco",OBJPROP_TEXT,"Ultimo Preço: "+DoubleToString(LastClose,_Digits)); 
       
    }
    
  
   height  =  ChartGetInteger(0,CHART_HEIGHT_IN_PIXELS);
   width   =  ChartGetInteger(0,CHART_WIDTH_IN_PIXELS);
  
  if(height != Last_Height || width != Last_Width)
    {
    
    Last_Height = height; 
    Last_Width  = width;
    CriarPainel();
    
    }

  
   xx = true;
   
//--- return value of prev_calculated for next call
   return(rates_total);
  }