Change Labels of Listing Post Type

functions.php

<?php

/**
 * Change Labels of Listing Post Type
 */

add_filter( 'wpsight_post_type_labels_listing', 'custom_post_type_labels_listing' ); 

function custom_post_type_labels_listing( $labels ) {
  
  $labels = array( 
	'name' 				 => _x( 'Listings', 'listing', 'wpcasa' ),
	'singular_name' 	 => _x( 'Listing', 'listing', 'wpcasa' ),
	'add_new' 			 => _x( 'Add New', 'listing', 'wpcasa' ),
	'add_new_item' 		 => _x( 'Add New Listing', 'listing', 'wpcasa' ),
	'edit_item' 		 => _x( 'Edit Listing', 'listing', 'wpcasa' ),
	'new_item' 			 => _x( 'New Listing', 'listing', 'wpcasa' ),
	'view_item' 		 => _x( 'View Listing', 'listing', 'wpcasa' ),
	'search_items' 		 => _x( 'Search Listings', 'listing', 'wpcasa' ),
	'not_found' 		 => _x( 'No listings found', 'listing', 'wpcasa' ),
	'not_found_in_trash' => _x( 'No listings found in Trash', 'listing', 'wpcasa' ),
	'menu_name' 		 => _x( 'Listings', 'listing', 'wpcasa' ),
  );
  
  return $labels;
  
}