Line do not plot on graph (mql5)

[LuisOrtin]

I've been racking my brain for a few days, but so far I haven't been able to plot the line on the chart - Expert Advisor.

I will be very grateful if some kind soul can help me fix this code.

Thank you in advance for all your help.

#include <Trade/Trade.mqh>
CTrade trade;


double SMA50Array1M[];


void OnTick()
  {
   
   //define the properties of the moving average
   int SMA50Definition1M= iMA(_Symbol,PERIOD_M1,50,0,MODE_SMA, PRICE_CLOSE);
   
   
   // sort the price array from the current candle downwards
   ArraySetAsSeries(SMA50Array1M,true);
  
   
   //defined EA, one line, current candle, candle 50,100 e 200, store result
   CopyBuffer(SMA50Definition1M,0,0,10,SMA50Array1M);
   
   double SMA50Array1M = SMA50Array1M[0];
 //  ChartIndicatorAdd(0,0,SMA50Array1M);
   
    ChartIndicatorAdd(2,0 ,SMA50Array1M);
  
     Comment(  "SMA501M  :  ",DoubleToString(SMA50Array1M,2));

}

[Vladimir Karputov]

LuisOrtin :

I've been racking my brain for a few days, but so far I haven't been able to plot the line on the chart - Expert Advisor.

I will be very grateful if some kind soul can help me fix this code.

Thank you in advance for all your help.

1. Question about the design: there is no name, code, no code extension, no header, no OnInit.

2. A gross mistake: you create an indicator handle at every tick !!! Remember, in MQL5 the indicator handle MUST be created ONCE and it MUST be done in OnInit!

3. A gross mistake: ChartIndicatorAdd must be used in OnInit.

[Vladimir Karputov]

Example:

Adding the 'iSAR' indicator to the chart

[LuisOrtin]

Vladimir Karputov # :

Exemplo:

Adicionando o indicador 'iSAR' ao gráfico

Vladimir Karputov

Thank you so much for taking the time to help me, no words. I ran some tests and I believe I'm going to the wrong solution. In fact, what I needed was to plot the average of a larger time graph over the shortest period. For example, the 60-minute average on 5-minute charts. Is the solution to create objects to solve this issue? Speaking of which, thank you for sending the material, I have already started studying. It has very relevant subjects. But once again thanks for sharing knowledge. Simply unspeakable!