[Plugin: WP Custom Fields Search] Exclude some categories from Custom search result

hi there

I Need to EXCLUDE some Categories from the search result… i have added the following code to the functions.php file but it doesnt seem to exclude the categories for the WP-custom-search:

function SearchFilter($query) {
if ($query->is_search) {
$query->set(‘cat’,’1,17,6′);
}
return $query;
}
add_filter(‘pre_get_posts’,’SearchFilter’);

There must be an easy way to do this.

Love the plugin by the way… if anyone can help me figure this out it will be perfect!

Mandy

https://www.ads-software.com/extend/plugins/wp-custom-fields-search/