Three.js mouse picking, 3D model with OBJMTLLoader - three.js

Question

i started programing with Three.js. Now i have a problem, when i load an Object with the OBJMTLLoader i dont get any access to change the position of the object with mouseMove. I have pushed the obects into the objects array but it doesnt work. If anybody could help or knowes a good tutorial would be really fine. I hope the structure how i wrote the question is clear....its the first time i´m using stacko.
These are my variables and the function i try to change the objects:
var mouse = new THREE.Vector2();
var raycaster = new THREE.Raycaster();
var objects = [];
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
raycaster.setFromCamera(mouse,camera);
intersects = raycaster.intersectObjects(objects);
if (intersects.length> 0) {
intersects[0].object.position.set(5, 5 ,5);
}
}
Here i load the object with the OBJMTLLoader....this works:)
var loader = new THREE.OBJMTLLoader();
loader.load('models/sofa4.obj', 'models/sofa4.mtl', function(object) {
// console.log(object);
object.traverse(function(child) {
if (child instanceof THREE.Mesh) {
child.material.shininess = 0;
// console.log(child.material);
}
});
object.position.z = 2;
object.position.y = -5.95;
object.scale.set(0.05,0.05,0.05);
scene.add(object);
objects.push(object);
});