Transparent Bars with FusionCharts

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js" type="text/javascript"></script>
<script src="https://static.fusioncharts.com/code/latest/fusioncharts.js" type="text/javascript"></script>
<script src="https://static.fusioncharts.com/code/latest/fusioncharts.charts.js" type="text/javascript"></script>
<div id="chart_div"></div>

JavaScript

$(function () {  
   new FusionCharts({
      renderAt: "chart_div",
      type: "mscolumn2d",
      dataSource: {
         chart: {
   					plotFillAlpha: "0",
            showPlotBorder: 1,
            plotBorderThickness: 3,
            plotBorderColor: "#000000",
            plotBorderAlpha: "100"
         },
        categories: [{
      			category: [
            		{ label: "2008" },
                { label: "2009" }
            ]
   			}],
   			dataset: [{
      			seriesname: "US",
            dashed: "1",
      			data: [{ value: 12 }, { value: 23 }]
   				}, {
      			seriesname: "UK",
      			data: [{ value: 34 }, { value: 7 }]
   				}]
      	}
   }).render();
});