HELP needed with CometChat and CI intergration!!

[eluser]ghadban[/eluser]
Costos when i added

Code:

$userid = $this->session->userdata('user_id'); //your user_id session variable;

i got the following error

Code:

<b>Fatal error</b>:  Using $this when not in object context in <b>/home/user/public_html/codeigniter/cometchat/config.php</b> on line <b>157</b><br />

[eluser]Unknown[/eluser]
I had to set the userid in the cookie to be passed onto the config.php

[eluser]Irfan Evrens[/eluser]
[quote author="kaotickelly" date="1273342500"]I had to set the userid in the cookie to be passed onto the config.php[/quote]

codeigniter store session data in a cookie and and serialise it also.

attached the code