set dynamic path elfinder - php

Question

i'm using elfinder and i want to set path with php var (from my db connection)
here the array from my connector
include_once('../../include/header.php');
$CustomerUniqueCode=$InfoG->customer_unique_secure_code;
error_reporting(0); // Set E_ALL for debuging
require './autoload.php';
// ===============================================
function access($attr, $path, $data, $volume) {
return strpos(basename($path), '.') === 0 // if file/folder begins with '.' (dot)
? !($attr == 'read' || $attr == 'write') // set read+write to false, other (locked+hidden) set to true
: null; // else elFinder decide it itself
}
$opts = array(
//'debug' => true,
'roots' => array(
array(
'driver' => 'LocalFileSystem', // driver for accessing file system (REQUIRED)
'path' => '../../folder/customer/'.$CustomerUniqueCode.'/files/', // path to files (REQUIRED)
'URL' => dirname($_SERVER['PHP_SELF']) . '../../folder/customer/'.$CustomerUniqueCode.'/files/', // URL to files (REQUIRED)
'tmbPath' => '../files/thumbnails/',
'tmbURL' => dirname($_SERVER['PHP_SELF']) . '/../files/thumbnails',
'uploadDeny' => array('all'), // All Mimetypes not allowed to upload
'uploadAllow' => array('image', 'text/plain'),// Mimetype `image` and `text/plain` allowed to upload
'uploadOrder' => array('deny', 'allow'), // allowed Mimetype `image` and `text/plain` only
'accessControl' => 'access' // disable and hide dot starting files (OPTIONAL)
)
)
);
// run elFinder
$connector = new elFinderConnector(new elFinder($opts));
$connector->run();
The error message is :
Invalid backend configuration.
Readable volumes not available.
display_file.php including elfinder.php
Here the server organisation
Someone can help me ?