Hi
I draw lines on chart (from strategy).
But I do not want to make them visible in workspace-tree, so I'm using IChartObject.setVisibleInWorkspaceTree method, but it do not work.
In attachment simple strategy which show the problem.

Moreover I have to use always method chat.remove, otherwise come new lines and they can not be thrown away.
Moreover if new line is drawn then on the upper left site of platform instrument is changed to this where line is draw.

Once there was a similar problem but it was solved, now back again:
viewtopic.php?f=85&t=46099&p=61027&hilit=setVisibleInWorkspaceTree#p61027

Please solve the problem

Please don't use the deprecated methods, try:

package jforex.charts;

import java.awt.Color;

import com.dukascopy.api.*;

public class ObjectLinesTestNonDeprecated implements IStrategy {
    private IContext context;
    
    @Configurable("Instrument:") 
    public Instrument instrumentThis = Instrument.EURUSD; 
    
    public void onStart(IContext context) throws JFException {
        this.context = context;
    }

    public void onAccount(IAccount account) throws JFException {
    }

    public void onMessage(IMessage message) throws JFException {
    }

    public void onStop() throws JFException {
        IChart chart = context.getChart(instrumentThis);
        if(chart != null){
            chart.remove("BidLine");
            chart.remove("AskLine");
        }
    }

    public void onTick(Instrument instrument, ITick tick) throws JFException {
        if(instrument!=instrumentThis) return;
        IChart chart = context.getChart(instrument);
        if (chart != null){
            IChartObject bidLine = chart.getChartObjectFactory().createHorizontalLine("BidLine", tick.getBid());
            bidLine.setVisibleInWorkspaceTree(false);
            bidLine.setColor(Color.GRAY);
            chart.add(bidLine);

            IChartObject askLine = chart.getChartObjectFactory().createHorizontalLine("AskLine", tick.getAsk());
            askLine.setVisibleInWorkspaceTree(false);
            askLine.setColor(Color.GRAY);
            chart.add(askLine);
        }
    }
    
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
    }
}

Thank you very much