Plivo direct-dial call recording - php

Question

I setup the plivo direct-dial app on my site and now am trying to start a recording on outgoing calls, but i am getting an error which i cant solve.
In the action url i am actually doing nothing.
Can someone please point me in the right direction?
<?php
include_once( $_SERVER['DOCUMENT_ROOT'] . "/app/libraries/plivo.php");
$dst = $_REQUEST['ForwardTo'];
if(! $dst)
$dst = $_REQUEST['To'];
$src = $_REQUEST['CLID'];
if(! $src)
$src = $_REQUEST['From'] or "";
$cname = $_REQUEST['CallerName'] or "";
$hangup = $_REQUEST['HangupCause'];
$dial_music = $_REQUEST['DialMusic'];
$disable_call = $_REQUEST['DisableCall'];
$r = new Response();
if($dst) {
$dial_params = array();
$record_params = array(
'action' => '*****/record-onanswer.php',
'startOnDialAnswer' => 'true',
'time_limit' => '600'
);
if($src)
$dial_params['callerId'] = $src;
if($cname)
$dial_params['callerName'] = $cname;
if(substr($dst, 0,4) == "sip:")
$is_sip_user = TRUE;
else
$is_sip_user = FALSE;
if($is_sip_user and in_array($disable_call, array("all", "sip"))) {
$r->addHangup(array("reason" => "busy"));
} elseif (! $is_sip_user and in_array($disable_call, array("all", "number"))) {
$r->addHangup(array("reason" => "busy"));
} else {
if($dial_music) {
$dial_params["dialMusic"] = $dial_music;
$d = $r->addDial($dial_params);
$r->addRecord($record_params);
} else
$d = $r->addDial($dial_params);
$r->addRecord($record_params);
if($is_sip_user)
$d->addUser($dst);
else
$d->addNumber($dst);
}
} else {
$r->addHangup();
$r->stop_record($params);
}
header("Content-Type: text/xml");
echo($r->toXML());
?>