ADS return error and the same statement works in mysql workbench

[crushonme]

I tried to generate a sample data in MySQL database with below command. In ADS, it always return error "1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER $$
CREATE PROCEDURE InsertRandomCustomers(IN num_records INT)
BEGIN
' at line 1".
However the same statement works normal in MySQL workbench. Please help to fix it.

USE tutorialdb;
SET @names = 'Orlando,Keith,Donna,Janet,Alice,Bob,Carol,David,Emma,Frank,Grace,Henry,Ivy,Jack,Kate,Liam,Mia,Nathan,Olivia,Peter,Quinn,Rachel,Simon,Tina,Victor,Wendy,Xavier,Yvonne,Zach';
SET @countries = 'China,United States,Russia,India,Brazil,South Africa,Mexico,Australia,Japan,Germany';
DELIMITER $$
CREATE PROCEDURE InsertRandomCustomersaa(IN num_records INT)
BEGIN
   DECLARE i INT DEFAULT 1895;
   DECLARE random_name VARCHAR(255);
   DECLARE random_location VARCHAR(255);
   WHILE i < num_records DO
       SET random_name = SUBSTRING_INDEX(SUBSTRING_INDEX(@names, ',', FLOOR(RAND() * 26) + 1), ',', -1);
       SET random_location = SUBSTRING_INDEX(SUBSTRING_INDEX(@countries, ',', FLOOR(RAND() * 10) + 1), ',', -1);
       INSERT INTO customers (name, location, email)
       VALUES (random_name, random_location, CONCAT(random_name, '@adventure-works.com'));
       SET i = i + 1;
   END WHILE;
END$$
DELIMITER ;
CALL InsertRandomCustomersaa(10000);