Fatal error: Call to undefined method Reg_model::get_sec() in C:\xampp\htdocs\careercenter\system\application\controller

[eluser]Unknown[/eluser]
i've got this error when i tried to retrieve data from database and show it to my form_dropown()
can anybody help me with this error??
this is some of my code :

the controller :

function register_emp()
{
$this->reg_model->get_sec('id','sec_name','sector');
$this->load->view('emp_reg_view', $data);
}

the model :

function get_sec($id, $name, $from)
{
$result = array();
$result_key = $this->db->query('select '.$id.', '.$nama.' from '.$from.' order by '.$id.' asc');
foreach($result_key->result()as $row)
{
$result[$row->$id]= $row->$id .'-'. $name;
}
return $result;
}
the view :

<?php echo form_dropdown('ind_sec', $nama, set_value('ind_sec', $id)); ?>


thanx b4

rikes