Scope of $data problems

[eluser]A_funs[/eluser]
I am trying to access data passed into $data in the constructor in other methods, $data is public so why isn't this working

<?php

class Company extends CI_Controller{

public $data;

function __construct(){

parent::__construct();

$data['something'] = 'something';

}



function submit_addcompany(){

$data['test_2'] = "something else";

//HOPEFULLY $data will contain both 'something and 'something else';

}

}

}