$paginator->numbers(); not working in cakephp


i am trying to use the pagination concept in Cakephp for my application ..

var $paginate = array(
'limit' => 5,
'order' => array(
'Report.report_id' => 'desc'

ANd in the cakephp action


Now this gives me the actual 5 entries of the Query with the group by condition but i m not getting the page numbers now in the View..

in the View

i have used like

         <?php  echo $paginator->numbers(); ?>

but it doesnt displays anything ?? why so.. guide me...