How to change default sort in custom subpanel - sugarcrm? -

i want put default sort "date created" in custompanel. can please guide me, how can make "date created" default sort?

please me.

in layout_defs change sort_by desired column :

<?php    $layout_defs['modulename']['subpanel_setup']['subpanelname'] = array(         'order' => 50,         'sort_order' => 'desc',         'sort_by' => 'date_entered',    ); ?> 

in example, default column used sorting date_entered