Restricting plotted points on a line chart

i want something like the sample provideed here https://demo.vaadin.com/charts/#SplineUpdatingEachSecond
How do i achieve something similair?

Chart chart = new Chart();
        chart.setHeight("450px");
        chart.setWidth("100%");

        Configuration configuration = chart.getConfiguration();
        configuration.getChart().setType(ChartType.LINE);
        configuration.getChart().setMarginRight(130);
        configuration.getChart().setMarginBottom(25);

        configuration.getTitle().setText("Monitoring");

        
        configuration.getxAxis().setType(AxisType.DATETIME);

        DateTimeLabelFormats dateFmt = new DateTimeLabelFormats();
        dateFmt.setSecond("%M:%S");
        configuration.getxAxis().setDateTimeLabelFormats(dateFmt);
        
        YAxis yAxis = configuration.getyAxis();
        yAxis.setMin(0d);
        yAxis.setTitle(new AxisTitle("Percentage"));
        yAxis.getTitle().setAlign(VerticalAlign.MIDDLE);


        PlotOptionsLine plotOptions = new PlotOptionsLine();
        plotOptions.getDataLabels().setEnabled(true);
        plotOptions.setThreshold(6);
        configuration.setPlotOptions(plotOptions);

        Legend legend = configuration.getLegend();
        legend.setLayout(LayoutDirection.VERTICAL);
        legend.setAlign(HorizontalAlign.CENTER);
        legend.setVerticalAlign(VerticalAlign.TOP);
        legend.setX(-10d);
        legend.setY(100d);
        legend.setBorderWidth(0);

        chart.drawChart(configuration);
        return chart;

setThreshold does not seem to be the right way to go

resolved it using shifting when adding an entry to a DataSeries

ls.add(new DataSeriesItem(time, percentage),true,true);