I’d like to picture some values from my strategy in desktop JForex chart like as an indicator (RSI, ..).
I can open chart and add Dukascopy indicator (IChartPanel rmiPanel = Chart.add( indicators.getIndicator("RMI"), new Object[]{15, 1}); )

But if I take source code RMI indicator (from SDK) and put it into my strategy as a class ÏndicatorRMI, I can NOT add this indicator to chart.
I use this code:
IndicatorRMI ind = new IndicatorRMI();
IChartPanel indPanel = Chart.add( ind, new Object[]{ 15, 1 } );
I receive NullPointerException. But both objects are not null. I tried it on live account. On demo it doesn't work too.
It is very important for me.
Could you advise me?

Thanks very much.

Please provide both the indicator and the example program that is plotting it on the chart.

Here is example code for testing. I have tested it this afternoon only on demo account. Live account was not accessible.

You need to open the chart first, before you can plot an indicator on it, see:
https://www.dukascopy.com/wiki/#JForex_SDK/Open_a_chart_from_IClient
Should you have any further problems, please provide also the program which runs the strategy in JForex-SDK.

I don't understand. Strategy opens chart. I see it.You can check it too.

Links solve chart open for standalone API and don't solve adding indicator. It implements IClient.

My strategy is not standalone. I run it under JForex desktop. I implement IStrategy direct.

Your approach won't work, because you need to register your indicator, before you can use it, see:
https://www.dukascopy.com/wiki/#Use_cust ... strategies
Also note, that the indicator name needs to be unique (i.e. it also can't match with any platform indicator name).

But registration get JFException: Cannot create indicator...

The indicator has to be an inner public static class, as it is given in the example under the above given link.

Now it works. Thanks very much. Have a nice weekend.