nested files upload in zf2

[waqarprojectinertia]

In Zend framework 1 We used to to this
require_once('Rackspace/Cloudfiles.php'); $cf = new Rackspace_Cloudfiles(user,pass); $cf->putObject('VAC/thumbnails/' . $fileName, $thumbfileData);

But in zf2 nested or slashes (/) doesn't work i think. Here is my code

$thumbImage = file_get_contents($fileThumbPath);
    $rackspace->storeObject('VAC/thumbnails/', $fileName, $thumbImage ,$this->getMataData($extension));

but this doesn't work, Any idea of how can i achieve this in zf2