Hello support,

I notice there is a strange " flashening "on chart drawings sent by the strategy I'm building, The logic is under " onBar " method so the event should be executed once every 1 minute bar (in this case), while the logic is somehow repeated MANY times every new 1 minute bar causing that lines are drawn and then quickly re-drawn.

I tried many different ways to avoid this, but without success.

Is there something wrong / missing in the code itself?

Here's extracted part of code. It is repeated for 4 instruments, but the same behavior happens even with 1 single instrument:

if (period.equals(Period.ONE_MIN)){
        for (IChart chart : context.getCharts(SelectedInstrument2)) {
                 if (chart.getSelectedPeriod().equals(Period.FIVE_MINS) && SelectedInstrument2.equals(chart.getInstrument())){
                 
                 IPriceMarkerChartObject Line1 = 
                                chart.getChartObjectFactory().createPriceMarker("H1L", price1);
                 IPriceMarkerChartObject Line2 = 
                                chart.getChartObjectFactory().createPriceMarker("H1P", price2);
                 H1HighOpen.setColor(h1Color);

                        Line1 .setLineWidth(L1Width);
                        Line1 .setLineStyle(L1Style);
                        Line1 .setOpacity(0.6f);
                        Line1 .setText("L1");
                        
                        Line2 .setColor(L1Color);
                        Line2 .setLineWidth(L1Width);
                        Line2 .setLineStyle(L1Style);
                        Line2 .setOpacity(0.6f);
                        Line2 .setText("L1");

                        chart.add(Line1);
                        chart.add(Line2);

                 }
         }
}

Thank you

Hello.

IStrategy.onBar() method is called for every subscribed instrument, so you should add check of corresponding condition in your code.
Also, consider moving existing lines to new price instead of creating new lines.

if (instrument.equals(SelectedInstrument2) && period.equals(Period.ONE_MIN)) {
for (IChart chart : context.getCharts(SelectedInstrument2)) {
if (chart.getSelectedPeriod().equals(Period.FIVE_MINS)) {
IPriceMarkerChartObject Line1 = (IPriceMarkerChartObject) chart.get("H1L");
IPriceMarkerChartObject Line2 = (IPriceMarkerChartObject) chart.get("H1P");
if (Line1 == null) {
Line1 = chart.getChartObjectFactory().createPriceMarker("H1L", price1);
...
chart.add(Line1);
} else {
Line1.setPrice(0, price1);
}
if (Line2 == null) {
Line2 = chart.getChartObjectFactory().createPriceMarker("H1P", price2);
...
chart.add(Line2);
} else {
Line2.setPrice(0, price2);
}
}
}
}

Kind regards, Support Team.

Thank you!!
It was a problem related with the instrument check indeed: the code was going in a kind of loop on all instruments, causing that kind of "flashening".

I didn't think at all about moving the lines to the new price, that will surely make it even more stable.

Thank you again for yor help, appreciated!

Regards