Relations between 2 namespace models.

Hi all,

Here is the problem:

Model A:

namespace Testing\Models;
class A extends \Phalcon\Mvc\Model
{
       public function initialize()
       { 
                $this->belongsTo("b_id", "B", "id");
       }
}

Model B:

namespace Testing\Models;
class B extends \Phalcon\Mvc\Model
{
       public function initialize()
       { 
                $this->hasMany("id", "A", "b_id");
       }
}

Controller A:

use Testing\Models\A;
use Testing\Models\B;
class AController extents ControllerBase
{
        public someAction()
        {
              $a =  A::findFirst(1);
              echo $a->B->oneField;              
        }
}

Screen print out: Model 'B' could not be loaded.