how to select multiple columns in select statement of stored procedure in mysql using 2 different OUT parameter

Question

''' DROP PROCEDURE IF EXISTS load_book_data; DELIMITER $$ CREATE PROCEDURE load_book_data(IN mytitle varchar(50),OUT auth VARCHAR(50),INOUT hike varchar(100))

BEGIN
SELECT price+hike INTO hike, author into auth FROM books where title=mytitle;
END $$
DELIMITER ;
SET @newhike=100;
CALL load_book_data('dbms',@author,@newhike);
SELECT @newhike,@author;

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