Clickable mesh with THREE.lod - three.js

Question

I for now work on a 3D engine for an amateur video game, and i want to add to him tons of features to get the best performances & gameplay. But i've got serious problems to get an "on click event" with lod meshes.
For the "lod" part, no problem for now, he's integrated, but i found no solution to apply that exemple with him :
https://stackoverflow.com/a/12808987/3379444
Did i must push the "lod" object, or every mesh individually ?
a part of my code :
var i, j, mesh, lod;
for ( j = 0; j <= 42; j++) {
lod = new THREE.LOD();
//Here, it's just var for place my mesh into a circle
rayonSysteme = Math.floor(Math.random() * 10000) + 2500;
angleSysteme = Math.random() * 360;
for ( i = 0; i < geometry.length; i ++ ) {
mesh = new THREE.Mesh( geometry[ i ][ 0 ], material );
mesh.scale.set( 1.5, 1.5, 1.5 );
mesh.updateMatrix();
mesh.matrixAutoUpdate = false;
//Callback here ?
mesh.callback = function() { console.log( this.name ); }
lod.addLevel( mesh, geometry[ i ][ 1 ] );
}
lod.position.x = rayonSysteme * Math.cos(angleSysteme);
lod.position.y = Math.floor(Math.random() * 1000)-500;
lod.position.z = rayonSysteme * Math.sin(angleSysteme);
//Or here ?
lod.updateMatrix();
lod.matrixAutoUpdate = false;
gravity = drawCircle("XZ", 64, 500, 360);
gravity.position.x = lod.position.x;
gravity.position.y = lod.position.y;
gravity.position.z = lod.position.z;
scene.add( lod );
//objects.push( lod );
scene.add( gravity );
};

Answer 1

Raycaster will test the mesh that should be used based on the distance to the ray origin.
This is the relevant code inside Raycaster:
} else if ( object instanceof THREE.LOD ) {
matrixPosition.setFromMatrixPosition( object.matrixWorld );
var distance = raycaster.ray.origin.distanceTo( matrixPosition );
intersectObject( object.getObjectForDistance( distance ), raycaster, intersects );
}