Could someone provide an example of how to get XPath of the attribute value of tag "ggl:h1"? The result must be "456".
<?xml version="1.0" encoding="UTF-8"?>
<site xmlns:ggl="http://ggl">
<ggl:header>
<ggl:h value="987"/>
<ggl:h1 value="456"/>
<ggl:h2 value="321"/>
</ggl:header>
</site>