Proměnná vymazává svojí hodnotu i přesto že nemá

class SettingsProject extends CI_Controller
    {
        public $_projectName;
       
       public function setName()
        {
            $this->form_validation->set_rules('name', 'Project name', 'trim|htmlspecialchars|required|reg[(^[a-zA-Z0-9_.-]*$)]');
            if($this->form_validation->run())
            {
                $this->_projectName = $this->input->post('name');
                
                // $this->_procectName je nastavena správně;

                redirect('settingsProject/library');
            }
            else
            {
                $error = validation_errors();
                $this->session->set_flashdata('error', $error);
                redirect('settingsProject/name');
            }
        }
        
        public function library()
        {
            echo $this->_projectName; // $this->_procectName je prázdná
            die();
            $this->template->setTemplate('title', 'Project Creator » Project libraies');
            $this->template->viewTemplate('library_view');    
        }