Not working on self joined model

[sohambanik]

My User model is like this:

class User extends AppModel {
public $actsAs = array('Containable', 'HabtmCounterCache');

public $hasAndBelongsToMany = array(
    'Follower' => array(
        'className' => 'User',
        'joinTable' => 'relationships',
        'foreignKey' => 'followed_id',
        'associationForeignKey' => 'follower_id',
        'unique' => 'true' // If you do not want records to be deleted
    ),
    'Following' => array(
        'className' => 'User',
        'joinTable' => 'relationships',
        'foreignKey' => 'follower_id',
        'associationForeignKey' => 'followed_id',
        'unique' => 'true' // If you do not want records to be deleted
    )
);

I have added two columns namely follwer_count and following_count at user model. But its not updating the counter.