You want to monitor multisource replicas in the MariaDB database using MySQL probe
DX UIM 20.4.x / 23.4.x
Mysql Probe
As of today, the mysql probe does not support monitoring multisource replicas for MariaDB.
Please request an enhancement if you want to introduce this metric/feature :
https://knowledge.broadcom.com/external/article/12135/how-to-raise-an-enhancement-request-for.html