forwarding form info to new wp query

Hi all,

I hope someone will help me with this, here’s what i have

i have one form that should filter posts with simple get action to same page, so if i have a page like sitename.com/page i send some information like sitename/page/?cat=misc&sort=asc sort part is working but not the category part, this is my code

$getorder = $_GET[“sort”];
$getcat = get_cat_ID($_GET[“cat”]);
$vectors = get_cat_ID(“vectors”);
$premiumvectors = get_cat_ID(“premium”);
$restquery = $vectors;
if (is_page(‘premium-vectors’)) { $restquery = $premiumvectors; }
if ($getcat) { $restquery = $restquery. “,”.$getcat; }

and query posts part

query_posts(“paged=$paged&order=$getorder&cat=$restquery”)

any help is much appreciated, when i try to echo that $restquery i get good result like cat=1,14 but it doesn’t filter it, it’s the same like cat=1