[Solved]-Change title when drilldown in Highcharts-Highcharts

For example using drilldown and drillup events (API), a couple of variables and Chart.setTitle (API). Like this:

var defaultTitle = "Basic drilldown";
var drilldownTitle = "More about ";

var chart = new Highcharts.Chart({
    chart: {
        type: 'column',
        renderTo: 'container',
        events: {
            drilldown: function(e) {
                chart.setTitle({ text: drilldownTitle + e.point.name });
            },
            drillup: function(e) {
                chart.setTitle({ text: defaultTitle });
            }
        }
    },
    title: {
        text: defaultTitle
    },
    // ... more options
});

See this JSFiddle demonstration.