CodeIgniter Blog Tutorial Bug

[eluser]Kikloo[/eluser]
Hi,

I was going to blog tutorial and I got stuck when CI gave error on line. I have double checked in CI tutorial and the line is same but i get the error:

Code:

<?=form_hidden("entry_id", $this->uri-segment(3));?>

Fatal error: Call to undefined function segment() in /home/avissone/public_html/siab/system/application/views/comment_view.php on line 11

How to fix ?

Thaks.