var data1 = [
    {"name": "ABC", "value": [100, 200, 300, 120, 320]}
];

var data2 = [
    {"name": "ABC", "value": [100, 200, 300, 120, 320]},
    {"name": "DEF", "value": [150, 210, 269, -696, 969]},
];

var options = {
    id: "chart",
    data: {
        plain: data1,
    },
};

var lineChart = new C9.LineChart(options);
lineChart.draw();

setTimeout(function() {
    lineChart.updateData(data2);
    setTimeout(function() {
        lineChart.updateData(data1);
            setTimeout(function() {
                lineChart.updateData(data2);
            }, 2000);
    }, 2000);
}, 2000);