FusionCharts 3D环饼图报错

1、在设计FusionCharts 3D环饼图时，出现错误，图显示不出来，具体错误如下图：

2、经过检查，发现声明的变量和下面引用的变量不一致

var doughnut2D = new FusionCharts( "../scripts/Charts/Doughnut3D.swf", "doughnut2DId", "100%", "540", "0" );
doughnut3D.setXMLUrl("data/doughnut3D.xml");
doughnut3D.render("doughnut3DChart");

“doughnut2D”和“doughnut3D”不一致，导致图无法出来