javascript - 如何制作amchart的区级ammap？

Question

我正在尝试为地区级别制作 ammap。首先，必须选择州，然后选择地区。到状态，这很好。但是，如何实现区级地图呢？我有印度地区的 svg。我试过但做不到。 SVG 在这里

JSFIDDLE：

var map = AmCharts.makeChart( "chartdiv", {

  "type": "map",
  "theme": "light",
  "projection": "miller",

  "dataProvider": {
    "map": "indiaLow",
    "getAreasFromMap": true
  },
  "areasSettings": {
    "autoZoom": true,
    "selectedColor": "#CC0000"
  },
  "smallMap": {},
  "export": {
    "enabled": false,
    "position": "bottom-right"
  }
} );

#chartdiv {
  width: 100%;
  height: 500px;
}

<script src="https://www.amcharts.com/lib/3/ammap.js"></script>
<script src="https://www.amcharts.com/lib/3/maps/js/indiaLow.js"></script>
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>
<script src="https://www.amcharts.com/lib/3/plugins/export/export.min.js"></script>
<link rel="stylesheet" href="https://www.amcharts.com/lib/3/plugins/export/export.css" type="text/css" media="all" />
<div id="chartdiv"></div>