In a custom indicator, I am using (i) InputParameterInfo.Type.DOUBLE to allow user to choose the input price; and (ii) InputParameterInfo.Type.PRICE to access the OCHLV data as declared.

        inputParameterInfos = new InputParameterInfo[] {
         new InputParameterInfo("Input data", InputParameterInfo.Type.DOUBLE),
         new InputParameterInfo("OCHLV Price", InputParameterInfo.Type.PRICE)
        };

The problem arise when I use indicators.calculateIndicator(...) in my strategy to call this custom indicator (after registering it in runtime). Specifically, what do I put for AppliedPriice in such a situation?

For example, using this doesn't work because AppliedPrice is expecting a second element in array.

      Object[] objs = this.indicators.calculateIndicator(instrument, 
            period, 
            new OfferSide[]{OfferSide.BID}, 
            "ABC",  
            new AppliedPrice[] {AppliedPrice.CLOSE},
            new Integer[] {20},
            Filter.WEEKENDS,
            1,
            bidBar.getTime(),
            0);   

I also tried this,

new AppliedPrice[] {AppliedPrice.CLOSE, null}

because if the indicator uses only InputParameterInfo.Type.PRICE, then we would input a null as the parameter for applied price.

In both cases, I am getting an ArrayIndexOutOfBoundsException because AppliedPrice[] has only length=1 whereas inputParameterInfos is expecting an array of length=2.

Hi,
Please try specifying the offerside of the second input as follows:

Object[] objs = this.indicators.calculateIndicator(instrument,
            period,
            new OfferSide[]{OfferSide.BID, OfferSide.BID},
            "ABC", 
            new AppliedPrice[] {AppliedPrice.CLOSE},
            new Integer[] {20},
            Filter.WEEKENDS,
            1,
            bidBar.getTime(),
            0);