Set and Delete Cookies at CodeIgniter

//load the cookie helper
$this->load->helper('cookie');
$cookie = array(
    'name'   => 'loggedin',
    'value'  => 'yes',
    'expire' => '86500',
    'domain' => '.apol0829.dev',
    'prefix' => 'apollidon_'
    );
set_cookie($cookie);
$cookie = array(
    'name'   => 'loggedin',
    'value'  => '',
    'expire' => '0',
    'domain' => '.apol0829.dev',
    'prefix' => 'apollidon_'
    );
delete_cookie($cookie);