plpgsql problem

CREATE FUNCTION userHasAll (int4,int4) RETURNS boolean AS '
DECLARE row RECORD; kirakorow kirakok%ROWTYPE; userID ALIAS FOR $1; kirakoID ALIAS FOR $2; megvan int4:=0; kepdarabok
INTEGER:=0;query text;
 
BEGIN SELECT * INTO kirakorow FROM kirakok WHERE kirako_id=kirakoID;
-- this works
 IF NOT FOUND THEN   RAISE EXCEPTION ''Invalid kirakoID'';   RETURN ''f''; END IF;
 kepdarabok:=kirakorow.kepdarabokx*kirakorow.kepdaraboky; megvan:=0;
 FOR row IN EXECUTE ''SELECT count(*) AS hits FROM talalatok WHERE userid='''''' || userID || '''''' AND jatek=''''''
||kirakoID || '''''';'' LOOP
 
-- this works too but if you replace it with the following row :
-- FOR row IN SELECT count(*) AS hits FROM talalatok WHERE userid=userID AND jatek=kirakoID LOOP
-- this executes as if the following query was issued
-- FOR row IN SELECT count(*) AS hits FROM talalatok WHERE jatek=kirakoID LOOP   megvan:=row.hits; END LOOP;
-- the same applies to inline queries too. if issued with execute
-- everything is fine, but if the query has more than one arguments
-- the compiler dismisses all, except the last one  IF megvan<>kepdarabok THEN   RETURN ''f''; END IF;  RETURN ''t'';
END;
' LANGUAGE 'plpgsql';