Как вывести дату создания/модификации категории?

<?xml version="1.0" encoding="utf-8"?>
<dleplugin>
	<name>Fix menu template</name>
	<description>date marker added</description>
	<icon></icon>
	<version>1.0</version>
	<dleversion>13.0</dleversion>
	<versioncompare>greater</versioncompare>
	<upgradeurl></upgradeurl>
	<filedelete></filedelete>
	<needplugin></needplugin>
	<mysqlinstall></mysqlinstall>
	<mysqlupgrade></mysqlupgrade>
	<mysqlenable></mysqlenable>
	<mysqldisable></mysqldisable>
	<mysqldelete></mysqldelete>
	<phpinstall></phpinstall>
	<phpupgrade></phpupgrade>
	<phpenable></phpenable>
	<phpdisable></phpdisable>
	<phpdelete></phpdelete>
    <file name="engine/classes/templates.class.php">
        <operation action="after">
            <searchcode><![CDATA[$template = str_replace( "[/root]", "", $template );]]></searchcode>
            <replacecode><![CDATA[
					$template = preg_replace_callback ( "#\{date=(.+?)\}#i", "formdate", $template );
                    ]]></replacecode>
        </operation>
    </file>
</dleplugin>