Can't initiate standard indicators in OnInit

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Indicator is working fine in OnCalculate,OnTick,OnTimer but why not in OnInit. Is there any other option to load indicator data on Initialization.?

int OnInit()

  {

   double mabuff[];

   ArraySetAsSeries(mabuff,true);

   int ma=iMA(_Symbol,_Period,14,0,MODE_SMA,PRICE_CLOSE);

   if(CopyBuffer(ma,0,0,2,mabuff)==-1)

   {

    Print("error in loading Inidcator data");

   }

   return(INIT_SUCCEEDED);

  }


2020.05.17 21:29:19.736 MA ONINIT (USDCAD,H1) error in loading Inidcator data

Main Idea I'm looking for is,I want to load indicator data only once in beginning.

Thanks,

Philip Pankaj


 
Read the documentation for copybuffer, this is wron in oninit
 
Perhaps you should read the manual, especially the examples. They all (including iCustom) return a handle (an int.) You get that in OnInit. In OnTick (after the indicator has updated its buffers,) you use the handle, shift and count to get the data.
          Technical Indicators - Reference on algorithmic/automated trading language for MetaTrader 5
          Timeseries and Indicators Access / CopyBuffer - Reference on algorithmic/automated trading language for MetaTrader 5
          How to start with MQL5 - General - MQL5 programming forum - Page 3 #22 2020.03.08
          How to call indicators in MQL5 - MQL5 Articles 12 March 2010

Also see my example for encapsulating calls
          Detailed explanation of iCustom - MQL4 programming forum 2017.05.23

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