Hello i want to select one of my cpt to another post i dont want to use post-relate because i actually using it and its not working like i want, so i need select only one option, so when i do the query

$args = array(
    'post_type' => 'estado',
    'post_per_page' -1,
    'order' => 'ASC',
    'orderby' => 'title'
);

$query = new WP_Query($args);

$states = array();
while($query->have_posts()) : $query->the_post();
    $states[get_the_ID()] = get_the_title();
endwhile;

piklist('field',array(
        'type' => 'select',
        'columns' => 12,
        'field' => 'estados',
        'label' => 'Estados relacionados',
        'choices' => $states
    )
);

but when i go to edit my post and update it, the first option is selected forever, where is my error? or how can i create a dynamic select?

Thanks!