ModelAnimation

var canvas = document.getElementById("renderCanvas");
var engine = new BABYLON.Engine(canvas, true);

var createScene = function () {

    // This creates a basic Babylon Scene object (non-mesh)
    var scene = new BABYLON.Scene(engine);

    // This creates and positions a free camera (non-mesh)
    var camera = new BABYLON.FreeCamera("camera1", new BABYLON.Vector3(0, 7, 17), scene);

    // This targets the camera to scene origin
    camera.setTarget(BABYLON.Vector3.Zero());

    // This attaches the camera to the canvas
    camera.attachControl(canvas, true);

    // This creates a light, aiming 0,1,0 - to the sky (non-mesh)
    var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(0, 1, 0), scene);

    // Default intensity is 1. Let's dim the light a small amount
    light.intensity = 0.7;

    return scene;
};

var scene = createScene();

//Import human mesh
BABYLON.SceneLoader.ImportMesh("him", "models/Dude/", "dude.babylon", scene, function(newMeshes, particleSystems, skeletons){
        scene.cameras[0].setTarget(newMeshes[0].position);

        scene.getMeshByName("him").scaling = new BABYLON.Vector3(0.07, 0.07, 0.07);
    });

engine.runRenderLoop(function () {
    if(scene.getMeshByName("him") != null){

        //my attempt
        var bone = scene.getSkeletonByName("Skeleton0").bones[20];
        var boneMat = bone.getWorldMatrix();
        BABYLON.Matrix.RotationZToRef(0.1, boneMat);

        bone.updateMatrix(boneMat);

        scene.render();
    }
});

// Resize
window.addEventListener("resize", function () {
    engine.resize();
});