How to redirect on form validation succes?

[eluser]gigas10[/eluser]
hmm correct me if I'm wrong but isn't the validation class call form_validation?

Code:

function process() {
        $this->load->helper('jsonwrapper');//http://www.boutell.com/scripts/jsonwrapper.html
        $this->load->helper('url');
        $this->load->library("form_validation");

        $fields['fname'] = 'Fname';
        $fields['lname'] = 'Lname';
        $this->form_validation->set_fields($fields);

        $rules['fname'] = 'trim|required';
        $rules['lname'] = 'trim|required';
        $this->form_validation->set_rules($rules);

        $this->form_validation->set_message('required', '%s  is required');


        if ($this->form_validation->run() == FALSE) {
            $data = array(
                    'fname' => $this->validation->fname_error,
                    'lname' => $this->validation->lname_error
            );
          
            echo json_encode($data);
        } else {
           $data = array(
                    'fname' => $this->input->post("fname"),
                    'lname' => $this->input->post("lname")
            );
            //put in our DB
            //print_r($data);
           // echo 'save data';
           redirect('welcome/success', 'location');

        }
    }

I don't know if you redid the form_validation class or something, but at least that is what sticks out to me.