Hello.

This piece of code:

public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
   Period per = new Period(Unit.Hour, 2);  
      bar = history.getBar(instrument,per,OfferSide.BID,0);
}

Compiles Ok but returns this error: java.lang.ArrayIndexOutOfBoundsException: -1 @ com.dukascopy.charts.data.datacache.ax.a(Unknown Source)

Some help please?. How to download 2-hours time period, or any custom period?

Thanks in advanced.

Hello,
It's not possible to download custom period bars.
To get two hour period bars, you need to download, for example, ONE_HOUR bars and then calculate your custom period bar from downloaded bars.