var scriptURL = Script.resolvePath('testEntity.js?'+Math.random());

var center = Vec3.sum(Vec3.sum(MyAvatar.position, {
    x: 0,
    y: 0.5,
    z: 0
}), Vec3.multiply(1.5, Quat.getFront(Camera.getOrientation())));

var test = Entities.addEntity({
    type: "Box",
    position: center,
    dimensions: {
        x: 1,
        y: 1,
        z: 1
    },
    color:{red:255,green:0,blue:255},
    dynamic: false,
    shapeType: 'box',
    script: scriptURL,
    userData: JSON.stringify({
        grabbableKey: {
            invertSolidWhileHeld: true
        }
    })
});