$this->uri->segment() returns FALSE [SOLVED]

Code:
function _remap($method)

{

    //function is always segment 1 as there are no other controllers

    $method = $this->uri->segment(1);    //the function

    $var1 = $this->uri->segment(2);        //the page

    $var2 = $this->uri->segment(3);        //the first var

    $var3 = $this->uri->segment(4);        //the second var

    $var4 = $this->uri->segment(5);        //thrid var

    $var5 = $this->uri->segment(6);        //fourth var

    

        

    //changing the dash to an underscore for php

    $methodOrig = $method;

    $method = url_title($method, 'underscore', TRUE);

    

    

    

    //loads all the languages available through a folder search

    $languages = $this->lingua->dirContents(APPPATH.'/language/','folder');

    //changes the dash to an underscore (language codes have dashes - functions have underscores)

    foreach ($languages as $lang){

    $lang_array[] = url_title($lang, 'underscore', TRUE);

    }

    

    $languages = $lang_array;

    

    $members = $this->common->regMembers();

    $newMemb=array();

    $this->common->array_flatten($members,$newMemb);

    $this->firephp->fb($newMemb);

    switch (true){

            //tests whether the requested url is a language rather than a function 

            case (!empty($method) && in_array($method,$languages)):

            //assigns the function to segment 2 rather than 1 which is the language

            $function = $this->uri->segment(2,'index');            

            $function = url_title($function, 'underscore', TRUE);

            $this->$function($var2,$var3,$var4,$var5,'');

        break;

            //tests wether the requested url is a valid function and calls the function

            case (!empty($method) && method_exists($this, $method)):

            $this->$method($var1,$var2,$var3,$var4,$var5);        

        break;

//user function            

case (!empty($methodOrig) && in_array($methodOrig,$newMemb)):

            $this->userSurveys($methodOrig,$var1,$var2);    

            

        break;

            //if all else fails - go to the index page

            default:            

            $this->index();

        break;

    }

}