Load PHP-JSON data not working

I’m following this tutorial: http://www.amcharts.com/tutorials/using-php-to-hook-up-charts-to-mysql-data-base/ in WordPress

My PHP file (http://www.myweb.com/info.php) is returning:

[ { "category": "0", "value1": 4386888.60026, "value2": 2279 }, { "category": "1", "value1": 3702907.01667, "value2": 60 }, { "category": "2", "value1": 1277778.24804, "value2": 383 }, { "category": "3", "value1": 1796774.7877, "value2": 2944 }, { "category": "4", "value1": 3522402.95305, "value2": 4111 }, { "category": "5", "value1": 2795358.12613, "value2": 6501 }, { "category": "6", "value1": 3309690.86785, "value2": 7499 } ]

I have the following resources:

http://www.amcharts.com/lib/3/amcharts.js
http://www.amcharts.com/lib/3/serial.js
http://www.amcharts.com/lib/3/style.css

This HTML:

<div id="%CHART%" style="width: 600px; height: 300px;"></div>

And JavaScript:

AmCharts.loadJSON = function(url) {
// create the request
if (window.XMLHttpRequest) {
// IE7+, Firefox, Chrome, Opera, Safari
var request = new XMLHttpRequest();
} else {
// code for IE6, IE5
var request = new ActiveXObject('Microsoft.XMLHTTP');
}

// load it
// the last "false" parameter ensures that our code will wait before the
// data is loaded
request.open('GET', url, false);
request.send();

// parse adn return the output
return eval(request.responseText);
};

AmCharts.ready(function() {
// load the data
var chartData = AmCharts.loadJSON('http://www.myweb.com/info.php');

// this is a temporary line to verify if the data is loaded and parsed correctly
// please note, that console.debug will work on Safari/Chrome only
console.debug(chartData);

// build the chart
// ...
});

var %CHART%;

// create chart
AmCharts.ready(function() {

// load the data
var chartData = AmCharts.loadJSON('http://www.myweb.com/info.php');

// SERIAL CHART
chart = new AmCharts.AmSerialChart();
chart.pathToImages = "http://www.amcharts.com/lib/images/";
chart.dataProvider = chartData;
chart.categoryField = "category";
chart.dataDateFormat = "YYYY-MM-DD";

// GRAPHS

var graph1 = new AmCharts.AmGraph();
graph1.valueField = "value1";
graph1.bullet = "round";
graph1.bulletBorderColor = "#FFFFFF";
graph1.bulletBorderThickness = 2;
graph1.lineThickness = 2;
graph1.lineAlpha = 0.5;
chart.addGraph(graph1);

var graph2 = new AmCharts.AmGraph();
graph2.valueField = "value2";
graph2.bullet = "round";
graph2.bulletBorderColor = "#FFFFFF";
graph2.bulletBorderThickness = 2;
graph2.lineThickness = 2;
graph2.lineAlpha = 0.5;
chart.addGraph(graph2);

// CATEGORY AXIS
chart.categoryAxis.parseDates = true;

// WRITE
chart.write("%CHART%");
});

But still doesn’t work, how could it be?

https://wordpress.org/plugins/amcharts-charts-and-maps/