Call to undefined function: importFromString()

[<vi...@ad...>]

Hi,
I'm trying to call the function XPathEngine.importFromString() and the =
result is like this:

    Fatal error: Call to undefined function: importfromstring() in =
d:\desenvol\055_op_hotel_continental\proves\testre.php on line 11

I don't understand why because the XPathEngine Object is created =
correctly...
Shuold I did something wrong??

<?php
include 'PHPXPath/XPath.class.php';
$nick =3D =
"<xmlDoc><accio>'loginPSW'</accio><user>SYSTEM</user><text><nick>manolo</=
nick><psw>manolo</psw></text></xmlDoc>";


$xmlOpt =3D array(XML_OPTION_CASE_FOLDING =3D> FALSE, =
XML_OPTION_SKIP_WHITE =3D> TRUE);
$xpathEn =3D new XPathEngine($xmlOpt);

echo "xpathEn: " . $xpathEn . "<br>";

$b =3D $xpathEn.importFromString($nick, $xpath);

echo "importFromString: " . $b . "<br>";
?>

Thank you very much, and sorry for my english...

Best wishes...

V=EDctor Rodr=EDguez Ortega.