Dear community,

i’m fully noob,but i have a big desire to become good tizen developer.

So, I have problems with something, i want create Rotary Selector for my app, and i use this manual https://developer.tizen.org/development/ui-practices/native-application/efl/ui-components/wearable-ui-components/rotary-selector#add .
Unfortunately my sdk give me few mistakes:
1.Multiple markers at this line
    – each undeclared identifier is reported only once for each function it 
     appears in
    – ‘selector’ undeclared (first use in this function)

2.passing argument 1 of ‘eext_rotary_selector_item_part_color_set’ from incompatible pointer type [enabled by default]

excerpt of “my code” 

<!–break–>

/* Label */

    ad->label = elm_label_add(ad->conform);
    elm_object_text_set(ad->label, “<b><align=center>Per aspera ad astra</align></b>”);
    evas_object_size_hint_weight_set(ad->label, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
    elm_object_content_set(ad->conform, ad->label);

    /*TeST*/

    Evas_Object *rotary_selector, *parent;

    rotary_selector = eext_rotary_selector_add(parent);
    eext_rotary_object_event_activated_set(rotary_selector, EINA_TRUE);
    eext_rotary_selector_part_color_set(selector, “selector,bg_image”,
                                        EEXT_ROTARY_SELECTOR_SELECTOR_STATE_NORMAL,
                                        100, 100, 100, 255);
    
    eext_rotary_selector_item_part_color_set(item, “item,icon”,
                                             EEXT_ROTARY_SELECTOR_ITEM_STATE_NORMAL,
                                             100, 100, 100, 255);
    
    

}

<!–break–>

This code i wrote in 

static void
create_base_gui(appdata_s *ad)
{

PLEASE HELP ME understand my problem or show me correct code to create rotary selector;

Thank you.