MY_Controller and resources

[eluser]theprodigy[/eluser]
If I load a library or helper in the constructor of MY_Controller, is that library or helper usable by the controllers that extend MY_Controller?

MY_Controller:

Code:

function MY_Controller()
{
    parent::Controller();
        
    $this->load->model('MAdmin');
    $this->load->library('form_validation');
        
    if(!$this->session->userdata('logged_in'))
    {
        redirect('admin/login');
    }
    
    $this->data = array();
}

extended class:

Code:

function add()
{
    $data['errors'] = '';
        
    $this->form_validation->set_rules('name', 'Name', 'trim|required');
    
    if ($this->form_validation->run() == FALSE)
    {
        if(array_key_exists("name",$_POST))
        {
            $this->data['errors'] = "<p style='color:red;font-weight:bold;'>Gallery Name is required<p>";
        }
        $this->data['main'] = "galleries/add_gal";
    }
    else
    {
        //get form info
        $this->data['gallery'] = $this->input->post('name');
        $this->data['notes'] = $this->input->post('description');
            
        //add gallery to database
        $this->MGalleryAdmin->add_gallery($this->data['gallery'],$this->data['notes']);
    
            
        //set main variable with what gets displayed
        $this->data['main'] = "galleries/gal_added";
    }

    $this->show_page();
}

I'm asking because this function "add" is throwing an error on

Code:

$this->form_validation->set_rules('name', 'Name', 'trim|required');

is there a way for me to make the resource available to children controllers?

Thanks