All texonomies working fine except one in wordpress

I am working on wordpress texonomies and there is already working texonomies but my texonomy that I want to add in it not working. I write the same code as existing texonomies used. Code is here…

My texonomy that I want to use is post_tag: Function::::

`function TaskerDev_create_post_type() {
global $tasks_url_thing, $services_url_thing, $serv_list, $auction_thing_list, $tsk_list;

$icn = get_bloginfo(‘template_url’) . “/images/taskicon.gif”;
register_post_type(‘task’, array(
‘labels’ => array(
‘name’ => __(‘Tasks’, ‘TaskerDev’),
‘singular_name’ => __(‘Task’, ‘TaskerDev’),
‘add_new’ => __(‘Add New Task’, ‘TaskerDev’),
‘new_item’ => __(‘New Task’, ‘TaskerDev’),
‘edit_item’ => __(‘Edit Task’, ‘TaskerDev’),
‘add_new_item’ => __(‘Add New Task’, ‘TaskerDev’),
‘search_items’ => __(‘Search Tasks’, ‘TaskerDev’),
),
‘public’ => true,
‘menu_position’ => 5,
‘register_meta_box_cb’ => ‘TaskerDev_task_set_metaboxes’,
‘has_archive’ => $tsk_list,
‘rewrite’ => array(‘slug’ => $tasks_url_thing . “/%tasker_cat%”, ‘with_front’ => false),
‘supports’ => array(‘title’, ‘editor’, ‘author’, ‘thumbnail’, ‘excerpt’, ‘comments’),
‘_builtin’ => false,
‘menu_icon’ => $icn,
‘publicly_queryable’ => true,
‘hierarchical’ => false

)
);

//—————————————–

$icn = get_bloginfo(‘template_url’) . “/images/serviceicon.gif”;
register_post_type(‘service’, array(
‘labels’ => array(
‘name’ => __(‘Services’, ‘TaskerDev’),
‘singular_name’ => __(‘Service’, ‘TaskerDev’),
‘add_new’ => __(‘Add New Service’, ‘TaskerDev’),
‘new_item’ => __(‘New Service’, ‘TaskerDev’),
‘edit_item’ => __(‘Edit Service’, ‘TaskerDev’),
‘add_new_item’ => __(‘Add New Service’, ‘TaskerDev’),
‘search_items’ => __(‘Search Services’, ‘TaskerDev’),
),
‘public’ => true,
‘menu_position’ => 5,
‘register_meta_box_cb’ => ‘TaskerDev_service_set_metaboxes’,
‘has_archive’ => $serv_list,
‘rewrite’ => array(‘slug’ => $services_url_thing . “/%tasker_cat%”, ‘with_front’ => false),
‘supports’ => array(‘title’, ‘editor’, ‘author’, ‘thumbnail’, ‘excerpt’, ‘comments’),
‘_builtin’ => false,
‘menu_icon’ => $icn,
‘publicly_queryable’ => true,
‘hierarchical’ => false

)
);

global $category_url_link, $location_url_link, $tag;
register_taxonomy(‘tasker_cat’, array(‘task’, ‘service’), array(‘hierarchical’ => true, ‘label’ => __(‘Categories’, ‘TaskerDev’), ‘rewrite’ => array(‘slug’ => $category_url_link, ‘with_front’ => false)));

register_taxonomy(‘tasker_location’, array(‘task’, ‘service’), array(‘hierarchical’ => true, ‘label’ => __(‘Locations’, ‘TaskerDev’), ‘rewrite’ => array(‘slug’ => $location_url_link, ‘with_front’ => false)));

register_taxonomy(‘tag’, ‘post’, array(‘multifaceted’ => true, ‘label’ => __(‘Locations’, ‘TaskerDev’),
‘rewrite’ => array(‘slug’ => “post_tag”, ‘with_front’ => false)));

add_post_type_support(‘task’, ‘author’);
add_post_type_support(‘service’, ‘author’);

register_taxonomy_for_object_type(‘service’, ‘tags’);
register_taxonomy_for_object_type(‘task’, ‘tags’);

register_taxonomy_for_object_type(‘post_tag’, ‘tags’);
flush_rewrite_rules();