How to fix this Trigger for a Percona Mysql database?

MySQL & MariaDB Percona Server for MySQL 5.6
1

I have written a TRIGGER with SELECT but I am getting three errors:

1-SELECT IS NOT VALID AT THIS POSITION FOR THIS SERVER VERSION, EXPECTING ‘(’, WITH".
At line 4

2-concat is no valid input…
At line 5

3-END is no valid at this position…

CREATE DEFINER=root@localhost TRIGGER user_AFTER_INSERT AFTER INSERT ON user
FOR EACH ROW
BEGIN
SELECT schema INTO @schema FROM Company WHERE Id = NEW.idCompany;
SET @sql = CONCAT(‘INSERT INTO ', @schema, '.Users (id, username, dateBirth, idCompany) VALUES(?, ?, ?, ?)’;
PREPARE stmt FROM @sql;
SET @id = NEW.id;
SET @username = NEW.username;
SET @dateBirth = NEW.dateBirth;
SET @idCompany = NEW.idCompany;
EXECUTE stmt USING @id, @username, @dateBirth, @idCompany;
DEALLOCATE PREPARE stmt;
END

Server version: 5.6.41-84.1 - Percona Server (GPL), Release 84.1, Revision b308619