What is the procedure to add a oracle container DB instance to Truesight Operations management 10.7 through CMA policy?

I know we need to add C## prefix to monitoring username but we are getting error as following-

Mon Jan  1 15:01:06 2018: It is Oracle 12C with container DB, execute: alter user C##BMCPATROL set container_data=all container=current;

Mon Jan  1 15:01:07 2018: Results of granting privileges to C##BMCPATROL

CREATE USER C##BMCPATROL IDENTIFIED BY ******

*

ERROR at line 1:

ORA-65048: error encountered when processing the current DDL statement in pluggable database MOFPROD