pt-table-sync

I m new with this tool… and trying to follow the tutorial/Forum comments to sync 2 tables between 2 servers

pt-table-sync --execute h=host1,D=db,t=tbl h=host2

Test 1:
pt-table-sync --execute -u=root -p=xxxxx h=server_source.com, D=database_source, t=table_souce_user h=server_target

Response:
You specified a database but not a table in D=database_source,. Are you trying to sync only tables in the ‘atabase_source’ database? If so, use ‘–databases atabase_source’ instead.

Test 2:
pt-table-sync --execute -u=root -p=xxxxx h=server_source.com, D=database_source, t=table_souce_user -u=root -p=password h=server_target

Response: same as above

I am not sure also if the parameters are between quotas or not (p, u, t etc)

Can someone help me out?,… what I am missing?

Thanks