How to get indicator to read from Daily Chart?

I get array out of range when i try to pull info from a chart im not backtesting on...
  

    double CalcFibo2()
{
   int LowBar = 0, HighBar= 0;
  double LowValue = 0 ,HighValue = 0;
  
  int lowest_bar = iLowest(NULL,0,MODE_LOW,BarsBack2,StartBar);
  int highest_bar = iHighest(NULL,0,MODE_HIGH,BarsBack2,StartBar);
  
  double higher_point = 0;
  double lower_point = 0;
  HighValue=High[highest_bar];
  LowValue=Low[lowest_bar];
  
  double fibo = (Ask-LowValue)/(HighValue-LowValue);
 // Print(fibo);
  return fibo;
}

sirius1fx posted:
I get array out of range when i try to pull info from a chart im not backtesting on...

Please elaborate......

This code will only return info on the current symbol......

Yes im trying to change the period this code its working on, it seems i can only get it to work on the chart im backtesting on..

Id like to backtest on M15 but using the High/Low of the daily timeframe using CalcFibo as a filter...

This should do it.........

  int lowest_bar = iLowest(NULL,PERIOD_D1,MODE_LOW,BarsBack2,StartBar);
  int highest_bar = iHighest(NULL,PERIOD_D1,MODE_HIGH,BarsBack2,StartBar);
  
  double higher_point = 0;
  double lower_point = 0;
  HighValue=iHigh(NULL,PERIOD_D1,highest_bar);
  LowValue=iLow(NULL,PERIOD_D1,lowest_bar);

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