Stock chart: line graph over candle stick graph

HTML

<script  src="https://www.amcharts.com/lib/3/amcharts.js"></script>
<script  src="https://www.amcharts.com/lib/3/serial.js"></script>
<script  src="https://www.amcharts.com/lib/3/themes/none.js"></script>
<script  src="https://www.amcharts.com/lib/3/amstock.js"></script>
<script src="https://rawgit.com/ckknight/random-js/master/lib/random.min.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
	width	: 100%;
	height	: 500px;
}

JavaScript

var chartData = [];
var r = new Random(Random.engines.mt19937().seedWithArray([0x12345678, 0x90231def]));
generateChartData();

function generateChartData() {
	var firstDate = new Date();
	firstDate.setHours(0, 0, 0, 0);
	firstDate.setDate(firstDate.getDate() - 2000);
    var price = 100;
	for (var i = 0; i < 2000; i++) {
		var newDate = new Date(firstDate);

		newDate.setDate(newDate.getDate() + i);

		var open = price;
        
		var close = open;

		var low = close;

		var high = close;
        for (var j = 0; j < 300; j++) {
            //price += Math.random() - 0.5;
            var delta = r.real(-0.5, 0.5, true);
            if(delta < 0) {
                price += 1;
            } else {
                price -= 1;
            }
            low = Math.min(low, price);
            high = Math.max(high, price);
        }
        close = price;

		var volume = Math.round(Math.random() * (1000 + i)) + 100 + i;

		var value = Math.round(Math.random() * (30) + 100);

		chartData[i] = ({
			date: newDate,
			open: open,
			close: close,
			high: high,
			low: low,
			volume: volume,
			value: value
		});
	}
}

var chart;

var run = function() {
    console.log("aaa" + "aa");
if (chart) {
    chart.clear();
    chart = null;
    chartData = [];
    generateChartData();
    //return;
}
chart = AmCharts.makeChart("chartdiv", {
	type: "stock",
    "theme": "none",
    pathToImages: "http://www.amcharts.com/lib/3/images/",

	dataSets: [{
		fieldMappings: [{
			fromField: "open",
			toField: "open"
		}, {
			fromField: "close",
			toField: "close"
		}, {
			fromField: "high",
			toField: "high"
		}, {
			fromField: "low",
			toField: "low"
		}, {
			fromField: "volume",
			toField: "volume"
		}, {
			fromField: "value",
			toField: "value"
		}],

		color: "#7f8da9",
		dataProvider: chartData,
		title: "West Stock",
		categoryField: "date"
	}],


	panels: [{
			title: "Value",
			showCategoryAxis: false,
			percentHeight: 70,
			valueAxes: [{
				dashLength:...