FusionCharts - Using annotations to add a callout to a column

Created using FusionCharts Suite XT - www.fusioncharts.com

HTML

<script src="http://static.fusioncharts.com/code/latest/fusioncharts.js"></script>
<script src="http://static.fusioncharts.com/code/latest/fusioncharts.charts.js"></script>
<script src="http://static.fusioncharts.com/code/latest/themes/fusioncharts.theme.fint.js"></script>
<!-- 
Using annotations to add a callout to a column. Positioning is done using  annotation macros e.g., $dataset.0.set.3.x or $dataset.0.set.3.y.
-->
<div id="chart-container">FusionCharts will render here</div>

JavaScript

FusionCharts.ready(function () {
    var revenueChart = new FusionCharts({
            type: 'column2d',
            renderAt: 'chart-container',
            id: "myChart",
            width: '500',
            height: '350',
            dataFormat: 'json',
            dataSource: {
                "chart": {
                    "caption": "Comparison of Quarterly Revenue",
                    "subCaption": "Last Year",
                    "showBorder": "0",
                    "xAxisName": "Quarter",
                    "yAxisName": "Amount (In USD)",
                    "numberPrefix": "$",
                    "yAxisMaxValue": "50000",                                
                    "showValues": "0",
                    "showTooltip": "0",
                    //Theme
                    "theme" : "fint"
                },
                "data": [
                    {
                        "label": "Q1",
                        "value": "25400"
                    }, {
                        "label": "Q2",
                        "value": "29800"
                    }, {
                        "label": "Q3",
                        "value": "21800"
                    }, {
                        "label": "Q4",
                        "value": "26800"
                    }
                ],
                //All annotations are grouped under this element
                "annotations": {
                    "drawImmediately": "1",
                    "showbelow": "1",
                    //Annotations on a chart can be divided across multiple groups for easy management, and manipulation through API
                    "groups": [                        
                        {                  
                            //Each group needs a unique ID
                            "id": "Callout",
                            //Under each group, you can define multiple items. Each item is a polygon, text or image - with its own set of parameters.
    ...