Problem with Unity 5 and WWWForm

I send a form to my webserver and ith Unity 4.6 it worked great but since I changed to Unity 5 my Server script says that the variables are not there

WWWForm form = new WWWForm();
var headers = form.headers;
headers["Content-Type"] = "application/x-www-form-urlencoded";

form.AddField("ID", PlayerPrefs.GetString("MyID"));
form.AddField("AnimalID", nAnimalID);


WWW www = new WWW("http://www.xxx.de/MyFeed.php", form.data, headers);

Can anybody help me please?

at your PHP file do this

<?php
ob_start();
print "<pre>";
print_r($_GET);
print_r($_POST);
print_r($_REQUEST);  
$buffer = ob_get_clean();
file_put_contents("log.txt", $buffer);
?>

And you can see what your unity game is sendding to you