How to do find and replace in thread title

[DamasGate]

Hello,


I use this plugin to find and replace words in postbit

$word = array
('112211221122',
'333355555333');
$link = array
('1111111111111',
'2222222222222');
$this->post['message'] = str_replace($word, $link, $this->post['message']);

Now I need to do for thread title?

Can I change this part

$post['message']
To
$thread['threadtitel']

Or what ?


Thanks in advanced