pull report on container and pluggable database size

Enterprise Manager 13.3.0.0 pulling data for Oracle 19c Database Enterprise Edition

Need to gather database size for container and pluggable database. Is there a sql query or a report in OEM to get this information for multiple databases?

This query returns 0 for size_GB

select target_name DB_NAME,host_name Host,

sum(trunc(tablespace_used_size/1024/1024/1024,2)) size_GB 

from sysman.MGMT$DB_TABLESPACES

where target_name like 'c2y%'

group by

host_name,target_name;

Thanks