Custom images on value axis

HTML

<script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/themes/none.js"></script>
<div dir="rtl">
<div id="chartdiv"></div>				
</div>

CSS

#chartdiv {
	width		: 100%;
	height		: 500px;
	font-size	: 11px;
}

JavaScript

// generate data
var chartData = [ {
    "code": "HUN",
    "value": "-0.2"
}, {
    "code": "DEU",
    "value": "-0.1"
}, {
    "code": "JPN",
    "value": "0.0"
}, {
    "code": "POL",
    "value": "0.1"
}, {
    "code": "PRT",
    "value": "0.3"
}, {
    "code": "KOR",
    "value": "0.5"
}, {
    "code": "ITA",
    "value": "0.5"
}, {
    "code": "CHN",
    "value": "0.6"
}, {
    "code": "GBR",
    "value": "0.7"
}, {
    "code": "ESP",
    "value": "0.8"
}, {
    "code": "USA",
    "value": "0.8"
}, {
    "code": "CAN",
    "value": "1.1"
}, {
    "code": "MEX",
    "value": "1.3"
}, {
    "code": "IND",
    "value": "1.3"
}, {
    "code": "AUS",
    "value": "1.7",
     "color": "#9e0b0f",
    "AnsDes": "- أبو ظبي",
    "alpha": 0.6
}, {
    "code": "UAE",
    "value": "7.5",
    "color": "#9e0b0f",
    "AnsDes": "✓ يجيب الخاص - أبو ظبي"
    
} ];

var chart = AmCharts.makeChart( "chartdiv", {
    type: "serial",
    theme: "lite",
    color: "#263138",
    "addClassNames": true,
    "defs": {
        "filter": {
            "id": "shadow",
           /*  "x": "-20%", 
            "y": "-20%",  */
            "width": "200%",
            "height": "200%",
            "feGaussianBlur": {
                "stdDeviation": "2 2",
                "result": "shadow"
            },
            "feOffset": {
               "dx": 3,
                "dy": 3
            }
        }
    },
    dataProvider: chartData,
    categoryField: "code",
    rotate: true,
    startEffect: 'easeOutSine',
    startDuration: 0,
    sequencedAnimation: true,
    autoMargin: true,
   autoMarginOffset: 5,
    categoryAxis: {
      gridPosition: "start",
        forceShowField: "forceShow",
        position: "left"
    },
    valueAxes: [ {
        position: "bottom",
        title: "Million USD",
        minorGridEnabled: true,
        reversed: true
    } ],
    graphs: [ {
        type: "column",
        title: "",
        labelText: "  [[AnsDes]]",
        showAllValueLabels: true,
...