static Elm_Entry_Filter_Accept_Set accept_set = { .accepted = "0123456789", .rejected = NULL };
static Elm_Entry_Filter_Limit_Size limit_size = { .max_char_count = 9 };

static void number_entry_test(appdata_s *ad) {

	//create a box to pack the entry frame
	Evas_Object *box = elm_box_add(ad->win);
	evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, 0);
	elm_win_resize_object_add(ad->win, box);
	evas_object_show(box);

	//create a frame to pack the entry
	Evas_Object *frame = elm_frame_add(ad->win);
	elm_object_text_set(frame, "Phone number entry");
	elm_box_pack_end(box, frame);
	evas_object_show(frame);

	//create the entry
	Evas_Object* entry = elm_entry_add(ad->win);
	elm_entry_single_line_set(entry, EINA_TRUE);

	//add filters
	elm_entry_markup_filter_append(entry, elm_entry_filter_accept_set, &accept_set);
	elm_entry_markup_filter_append(entry, elm_entry_filter_limit_size, &limit_size);

	elm_object_content_set(frame, entry);
	evas_object_show(entry);
}