[BUG] custom filter in example.extender.inc.php not working

&extenders=`example`

[!Ditto? &tpl=`all_cat_item` &tplAlt=`all_cat_item_alt` &parents=`4818` &sortBy=`pagetitle` &sortDir=`ASC` &display=`80` &depth=`2` &hideFolders=`1` &hiddenFields=`videos` &seeThruUnpub=`0` &extenders=`example`!]

if (!function_exists("exampleFilter")) {
	// wrap functions in !function_exists statements to ensure that they are not defined twice
	
	// ---------------------------------------------------
	// Function: exampleFilter
	// 
	// Takes the resource array for an individual document
	// and asks for the return of a 0 or 1 with 0 removing 
	// the document and 1 leaving it in the result set. 
	// In this case, if the lower case value of the pagetitle
	// is foo, it is removed while all other documents are shown
	// ---------------------------------------------------
	function exampleFilter($resource) {
		if (strtolower($resource['pagetitle']) == "foo") {
			return 0;
		} else {
			return 1;
		}
	}
}