[RESOLVED] SOAP error

[Zpixel]

i get some errors when trying to use SOAP and send SOAP request:
this is the code:

$params = array(
 			'pin' => $pin ,  // this is our PIN NUMBER
            'amount' => $amount,
            'orderId' => $orderID,
			'callbackUrl' => $callbackUrl,
			'authority' => $authority,
			'status' => $status
          );
$sendParams = array($params) ;
$res = $soapclient_1->call('PinPaymentRequest', $sendParams);

print_r($res);

these are errors:

Array ( [faultcode] => soap:Client [faultstring] => Server was unable to read request. --- There is an error in XML document (1, 427). --- Input string was not in a correct format. [detail] => )

this script has worked before but now, in php5 i think, i have this problem. what should i do?

[Zpixel]

amount has to be integer.
Resolved