$this->input->post() problem

[eluser]InsiteFX[/eluser]

Code:

Options FollowSymLinks
<IfModule mod_rewrite.c>
    RewriteEngine on
    
    RewriteBase /codeigniter

    RewriteCond $1 !^(assets)
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d

    RewriteRule ^(.*)$ index.php?/$1 [QSA,L]
</IfModule>

<IfModule !mod_rewrite.c>
    ErrorDocument 404 /codeigniter/index.php
</IfModule>