fix: String variable type

[0o001]

No description provided.

[mysql-oca-bot]

Hi, thank you for submitting this pull request. In order to consider your code we need you to sign the Oracle Contribution Agreement (OCA). Please review the details and follow the instructions at https://oca.opensource.oracle.com/
Please make sure to include your MySQL bug system user (email) in the returned form.
Thanks

[0o001]

Hi, thank you for submitting this pull request. In order to consider your code we need you to sign the Oracle Contribution Agreement (OCA). Please review the details and follow the instructions at https://oca.opensource.oracle.com/ Please make sure to include your MySQL bug system user (email) in the returned form. Thanks

I cannot sign because mysql-shell is not included in the projects, but I wanted to say that I have signed before and contributed to other Oracle projects, in case it counts.

[mysql-admin]

Hi @0o001
Please select the 'MySQL' generic project for the OCA

Thanks for contributing to MySQL
==Omer

[0o001]

Hi @0o001 Please select the 'MySQL' generic project for the OCA

Thanks for contributing to MySQL ==Omer

Now approved. Thank you.

[mysql-oca-bot]

Hi, thank you for your contribution. Please confirm this code is submitted under the terms of the OCA (Oracle's Contribution Agreement) you have previously signed by cutting and pasting the following text as a comment:
"I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it."
Thanks

[0o001]

I confirm the code being submitted is offered under the terms of the OCA, and that I am authorized to contribute it.

[mysql-oca-bot]

Hi, thank you for your contribution. Your code has been assigned to an internal queue. Please follow
bug http://bugs.mysql.com/bug.php?id=112718 for updates.
Thanks