Cannot set customized meta fields for a publish

I’m attempting so as to add some customized meta variables to a customized publish kind, however I am unable to see the brand new variables after I dump a posts meta knowledge, and I am unable to entry it in

Right here is the publish definition from my features.php file

perform register_team_post(){
    register_post_type('staff', [
        'public'=>true,
        'labels'=>array(
            'name'=>'Team',
            'add_new_item'=>'Add New Team Member',
            'edit_item'=>'Edit Team Member',
            'all_items'=>'All Team Member'
        ),
        'menu_icon'=>'dashicons-businessman',
        'show_in_rest' => true,
        // 'supports' => array('editor','title', 'custom-fields'),
        'supports' => array('editor','title'),
        'rewrite' => array('slug' => 'teams'),
        'template' => array(
            array( 'dqcblocks/member' )
        )
    ]);

    $fields = [
        'team_member_portrait',
        'team_member_name',
        'team_member_title',
        'team_member_description'
    ];

    $args = array('show_in_rest' => true, 'kind' => 'string');

    foreach($fields as $discipline){
        register_post_meta( 'staff', $discipline, $args);
    }
}

add_action('init', 'register_team_post');

If I create a staff publish and tried dumping the meta fields, however my new fields do not seem:

$meta_values = get_post_meta( get_the_ID() );
var_dump( $meta_values );

end result:

array(2) {
  ["_edit_lock"]=>
  array(1) {
    [0]=>
    string(12) "1566159392:1"
  }
  ["_edit_last"]=>
  array(1) {
    [0]=>
    string(1) "1"
  }
}

I additionally tried utilizing my customized meta fields in a Gutenberg block.

attributes: {
    portrait: {
      kind: "string",
      supply: "meta",
      meta: "team_member_portrait",
    },
    identify: {
        kind: "string",
        supply: "meta",
        meta: "team_member_name",
    },
    title: {
      kind: "string",
      supply : "meta",
      meta: "team_member_title",
    },
    description: {
      kind: "string",
      supply: "meta",
      meta: "team_member_description",
    }
  }

however after I add my block and save the variables do not replace and stay empty.

Am I utilizing register_post_meta appropriately?