Downgrade Mariadb to 10.1?

Hello i using cpanel last version on centos 7 i install mariadn 20.2 in MySQL/MariaDB Upgrade option in WHM i want install mariadb 10.1 ..( i want downgrade from 10.2 to 10.1) can you help me ? i read this post : That's correct. If you want to use MariaDB 10.1, you'd create /root/cpanel_profile/cpanel.config and add the following line to it prior to starting the cPanel installation: i not understand . in insert mysel version 10.1 ... ! i shouul reload centos and install cpanel again ?????