Fill custom field when creating a new post

[veptune]

Hello,

I have rewrite the newPost function to add a custom field, but it doesn't work. Any idea? Thanks

function newPost($title, $body, array $content = array())
{
$default = array(
'post_type' => 'post',
'post_status' => 'publish',
'mykey' => 'myvalue',
);
$content = array_merge($default, $content);
$content['post_title'] = $title;
$content['post_content'] = $body;

    $content['custom_fields'] = array(
        'mykey' => 'myvalue',
    );

    $params = array(1, $this->_username, $this->_password, $content);

    return $this->_sendRequest('wp.newPost', $params);
}