How can I change the recipient email address or send GeoDirectory admin notification emails to multiple email addresses in GeoDirectory?

 
/** Changing the Admin Notifications Email Address */
add_filter('geodir_admin_email','wpsc_my_new_gd_admin_email');
function wpsc_my_new_gd_admin_email( $admin_email ){
    return "my-new-admin-email@my-domain.com";
}
/*Sending Notification Emails to Multiple Addresses*/
add_filter('geodir_admin_email','wpsc_my_new_gd_admin_email');
function wpsc_my_new_gd_admin_email( $admin_email ){
	return "my-new-admin-email@my-domain.com, 2ndemail@my-domain.com, 2rdemail@my-domain.comm"; 
}