Meta Query Filtering not working on Custom Meta Box using Radio Buttons

I think I found another way. Seems to be working great.
/****** CUSTOME POST-TYPE ******/

<?php

// CREATE CUSTOME META BOX
function r_create_mb_bids(){
    add_meta_box(
        'r_bid_visibility_mb',
        __( ' Bid Visibility', 'bids' ),
        'r_bid_visibility_mb',
        'bids',
        'normal',
        'high'
    );
}
add_action( 'add_meta_boxes', 'r_create_mb_bids' );


// DISPLAY IN ADMIN
function r_bid_visibility_mb( $post ){
  global $post;
  $bid_data = get_post_custom($post->ID);
  $visibility = $bid_data['visibility'][0];
 ?>

  <?php $visibility_value = get_post_meta($post->ID, 'visibility', true);
      $visibility_checked = 'checked="checked"';
  ?>
    <input type="radio" name="visibility" value="yes" <?php if($visibility_value =='yes'){ echo $visibility_checked; }  ?>/> Open
    <input type="radio" name="visibility" value="no" <?php if($visibility_value =='no'){ echo $visibility_checked; }  ?>/> Secure
    <?php
}


// SAVE META DATA
add_action('save_post', 'save_details_visibility');

function save_details_visibility(){
  global $post;

if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
    return $post->ID;
}

  update_post_meta($post->ID, 'visibility', $_POST['visibility']);
}

?>


/****** PAGE TEMPLATE ******/

<?php

// THE LOOP
    $args = array(
        'post_type'  => 'bids',
        'posts_per_page' => -1,
        'meta_query' => array(
            array ( 'key' => 'visibility', 'value' => 'yes', )
        )
    );

    $query = new WP_Query( $args ); while ( $query->have_posts() ) : $query->the_post();

?>





[ ... ]

<?php endwhile; ?>


?>
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