Xtykutl

I have big problem with my meta query. I would like to filter my posts, and I need query to compare post_title with my $_POST value.
Code:

function postsFilter(){

$args = array(

    'post_type' => 'posts',

    'meta_query' => array(

        'relation' => 'AND'

    )

);



if( isset($_POST['year']) && $_POST['year'] ) 

$args['meta_query'] = array(

    'key' => 'year',

    'value' => $_POST['year'],

    'compare' => '='

);

if( isset($_POST['theme']) && $_POST['theme'] ) 

$args['meta_query'] = array(

    'key' => 'theme',

    'value' => $_POST['theme'],

    'compare' => '='

);



if( isset($_POST['member']) && $_POST['member'] ) 

$args['meta_query'] = array(

    'key' => 'member_relation',

    'value' => ``.$_POST['member'].``,

    'compare' => 'LIKE'

);





$query = new WP_Query( $args );



echo "<script>

var posts_p = '" . json_encode( $query->query_vars ) . "',

     current_page_p = " . 1 . " ,

     max_page_p = " . $query->max_num_pages . ";

     console.log(current_page_p, max_page_p);

</script>";



if( $query->have_posts() ) :

    while( $query->have_posts() ): $query->the_post();

        get_template_part('template-parts/content', 'posts');

    endwhile;

    if (  $query->max_num_pages > 1 )

        echo '<div class="button-load-more_p btn-load-more text-center mx-auto w-100"><a class="btn btn-primary btn-md btn-with-icon fade-in full-visible load-more"><span>Load more</span></div></a></div>';

    wp_reset_postdata();

else :

    echo 'No publications found';

endif;



die();

}

and problem exists here:

if( isset($_POST['member']) && $_POST['member'] ) 

$args['meta_query'] = array(

    'key' => 'member_relation',

    'value' => $_POST['member']

    'compare' => 'LIKE'

);

because I don't know how to write this part of query,
member relation is POST OBJECT type file in Wordpress, I need compare $_POST['member'] with post_title value (maybe I am wrong ?)

$member = get_field('member_relation', $post_object->ID); 

$member->post_title;

Is it possible to write this query? Please give me any advice or example solution of my problem.