Thank you so much @martin.schwarz you are right it works when the agent run it 
For testing its very good idea thank you.
Do you know where can I download those plugins Check Plug-Ins Catalog
2.35. MySQL
- MySQL: Capacity
- MySQL: Galera Cluster Addresses (Startup)
- MySQL: Galera Donor
- MySQL: Galera Size
- MySQL: Galera Status
- MySQL: Galera Sync Status
- MySQL: IO Statistics of InnoDB Engine
- MySQL: Maximum Connection Usage since Startup
- MySQL: Sessions
- MySQL: Slave Sync Status
- MySQL: Status of Deamon
- MySQL: Version