FusionCharts free中的setDataURL只能接收第一个参数？？

            showCharts:function(){
                $("#memberChartDiv").empty();
               var chart = new FusionCharts("/Js/FusionChartsFree/Charts/FCF_Column3D.swf", "memberChart", $("#memberChartDiv").width(), "195");
		       chart.setDataURL(escape('/Public/ChartXML.aspx?type=memberChart&method=ajax&v='+Math.random()));
               chart.addParam("wmode","Opaque");
		       chart.render("memberChartDiv");
            }            showCharts:function(){