Adding a Wrld polyline indoors

Enter the Intercontinental Hotel and move up one floor to view the polyline.
<!DOCTYPE HTML>
<html>
  <head>
    <script src="https://unpkg.com/wrld.js@1.x.x"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.1/leaflet.css" rel="stylesheet" />
    <style>
      #floorButtons {
        position: absolute;
        z-index: 20;
      }

      #floorButtons button {
        display: block;
        width: 100%;
      }
    </style>
  </head>
  
  <body>
  <div style="position: relative">
    <div id="floorButtons">
      <button type="button" onclick="moveUp()">Move Up</button>
      <button type="button" onclick="moveDown()">Move Down</button>
      <button type="button" onclick="expand()">Expand</button>
      <button type="button" onclick="collapse()">Collapse</button>
      <button type="button" onclick="exitIndoors()">Exit</button>
    </div>

    <div id="map" style="height: 400px"></div>

    <script>
      var map = Wrld.map("map", "your_api_key_here", {
        center: [37.782084, -122.404578],
        zoom: 17,
        indoorsEnabled: true
      });

      var polylinePointsWithElevation = [
        [37.781946, -122.405044, 5.0],
        [37.781946, -122.405044],
        [37.781825, -122.404892],
        [37.782095, -122.404542],
        [37.782034, -122.404462],
        [37.782034, -122.404462, -5.0]
      ];

      var polyline = Wrld.native.polyline(polylinePointsWithElevation, {
        indoorMapId: "intercontinental_hotel_8628",
        indoorMapFloorId: 1,
        weight: 6.0,
        color: "#03f"
      }).addTo(map);

      function moveUp() {
        map.indoors.moveUp();
      }

      function moveDown() {
        map.indoors.moveDown();
      }

      function expand() {
        map.indoors.expand();
      }

      function collapse() {
        map.indoors.collapse();
      }

      function exitIndoors() {
        map.indoors.exit();
      }
    </script>

  </div>
  </body>
</html>