Problem z procedura Opcje

[quality]

Witam.
mam taka procedure:

[SQL] pobierz, plaintext 
DELIMITER $$
DROP PROCEDURE IF EXISTS getRandomRecords$$
CREATE PROCEDURE getRandomRecords(IN cnt INT, IN tablein VARCHAR(255))
 
BEGIN
    DROP TEMPORARY TABLE IF EXISTS randomRecords;
    CREATE TEMPORARY TABLE randomRecords ( `rand_id` INT );
 
    loop_random: LOOP
        IF cnt < 1 THEN
            LEAVE loop_random;
        END IF;
 
        INSERT INTO randomRecords
            SELECT r1.id FROM `products` AS r1 JOIN
                (SELECT (RAND() *
                    (SELECT MAX(id) FROM `products`)) AS id) AS r2
            WHERE r1.id >= r2.id ORDER BY r1.id ASC LIMIT 1;
        SET cnt = cnt - 1;
    END LOOP loop_random;
 
SELECT * FROM randomRecords;
END$$
DELIMITER ;
[SQL] pobierz, plaintext 

Procedura jak widac posiada dwie zmienne cnt i tablein.
Jak podstawic zmienna "tablein" do zapytania select (pod `products`) ?

Siedze i siedzie i nie moge wymyslec (IMG:style_emoticons/default/smile.gif) probowalem z @ itp i nic nie dziala.