Move Dates from Right Sidebar

Hi
I have tried:

function gd_detail_page_tab_event_schedule( $tab_array ) {
if ( ‘gd_event’ == get_post_type() ) {

$tab_array_new = array();

foreach($tab_array as $key=>$tab){

$tab_array_new[$key] = $tab;

if($key==’post_profile’){
$tab_array_new[‘event_schedule’] = array(
‘heading_text’ => __( ‘Date n Time’, ‘geodirevents’ ),
‘is_active_tab’ => false,
‘is_display’ => apply_filters( ‘geodir_detail_page_tab_is_display’, true, ‘event_schedule’ ),
‘tab_content’ => ”
);
}

}

return $tab_array_new;

}

return $tab_array ;
}

but it has done nothing?