about bars about history data

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int start{} function i only use this 

start{
print(Bars);
}

i tred start at different time and use different time frame, always bars will be 1001, so that we only use 1001 bars history data in ea ? how to get more bars history data ? thank you. i have tried use arraycopyseries, same result.

int start()
  {
//----
   Print(Bars);
   datetime daytimes[];
   
   ArrayCopySeries(daytimes,MODE_TIME,Symbol(),Period());
  int  error=GetLastError();
   if(error==4066)
      {
      for(int i=0;i<2;i++)
         {
         Sleep(5000);
         ArrayCopySeries(daytimes,MODE_TIME,Symbol(),Period());
         
         }
      }
    Print(ArraySize(daytimes));
//----
   return(0);
  }
always be 1001 at start. after fisrt bar it will be 1002 1003 1004, but at first bar, it always can only get 1001 bars.
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