XPATH question

[Behrouz H. <be...@ra...>]

Hi,

I am new to this class so please do not laugh if the question is 
elementary.  I am trying to user the following string as the query:

require_once("XPath.class.php");
$userID='yyy';
$password='xxx';

$url="docs/userProfile.xml";
$xpath = new XPath($url);
$query = "/userProfiles/userProfile/general/userID='$userID' AND 
/userProfiles/userProfile/general/password='$password'";
$tree = $xpath->exportAsXml($query);

and I am keep getting the error:
Notice: Undefined index: /userProfiles/userProfile/general/userID='yyy' AND 
/userProfiles/userProfile/general/password='xxx' in c:\program files\apache group\apache\htdocs\plms\XPath.class.php on line 1235

Please help!

Behrouz Heshmatipour
E-mail: be...@ra...
Office Phone: 1 (866) RAYANE-1