Does anyone know why the following code would generate an array out of bounds error?

public IndicatorResult calculate(int startIndex, int endIndex) {
        outputs = inputs;
        return new IndicatorResult(startIndex, --endIndex);
    }

Same error occurs even if I don't decrement endIndex. Looking at the original auto generated code, IndicatorResult is called like this:



where j is always endIndex - 1. Therefore, --endIndex should be the same as endIndex - 1. No matter what combinations of endIndex values I try, I always get the same error which never changes from run to run:

Error in indicator: calculate() method of indicator [PTI] returned incorrect values. Requested from-to [0]-[3,448],  input array size [3,449], returned first calculated index [60], number of calculated values [3,447], lookback [60], lookforward [0], first index + number of elements cannot be > input array size

The onStart() method looks like this:

 public void onStart(IIndicatorContext context) {
        indicatorInfo = new IndicatorInfo("PTI", "Price projection onto the Cartesian plane", "My indicators",
                false, false, false, 1, 1, 1);
               
        InputParameterInfo inputPI = new InputParameterInfo("Source Series", InputParameterInfo.Type.DOUBLE);
        inputPI.setOfferSide(OfferSide.BID);
        inputPI.setPeriod(timeFrame);
        inputPI.setAppliedPrice(IIndicators.AppliedPrice.CLOSE);
        
        inputParameterInfos = new InputParameterInfo[] {
            inputPI
        };
        optInputParameterInfos = new OptInputParameterInfo[] {
            new OptInputParameterInfo("Timeframe", OptInputParameterInfo.Type.OTHER, new IntegerRangeDescription(60, 1, 1440, 1))
        };
        outputParameterInfos = new OutputParameterInfo[] {
            new OutputParameterInfo("Projected Price", OutputParameterInfo.Type.DOUBLE, OutputParameterInfo.DrawingStyle.LINE)
        };
        console = context.getConsole();
    }

Here I am only trying to understand how JForex handles the inputs and outputs arrays as the indicator is called from somewhere else--beats me from where and how/where startIndex and endIndex come from. But also, later I need to build a very simple indicator that passes through all CLOSE price values from a ONE_HOUR timeframe when attached to a chart which timeframe is < ONE_HOUR.

So obviously, the logic is very simple: set the InputParameterInfo to OfferSide.BID, Period.ONE_HOUR, and IIndicators.AppliedPrice.CLOSE.

I assume that JForex will automatically populate the double array inputs[][] with the BID CLOSE price of every ONE_HOUR candle. I write 'assume' because I cannot find any documentation on the exact nature of this input population mechanism.

Why do I want to do this? Because I need to see the display of these values in an indicator pane when later the output of this indicator is passed to another indicator in a strategy I am working on.

As you can see, the calculate() method does not use a loopback and no loops. It's just a straightforward reference copy of 1 array to another. So why should this cause an index out of bounds error???

And why is the first calculated index == 60 when no lookback period is used in the calculate() method, regardless of the timeframe of the chart the indicator is attached to? Shouldn't the first calculated index == 0 always in this case because the first candle in the series is always at index 0?

Any help greatly appreciated as I cannot find any pertinent information neither in the API docs nor the wiki.