1. This is how to confirm ESXi server HOST's UUID.
https://<host>/mob/?moid=ha%2dhost&doPath=hardware%2esystemInfo Where <host> is your ESXi server host's IP, shortname or FQDN.
2. You may want to consider using "Auto Montior" rather than "Static Monitor" Auto Monitor does not use an internal ID to track object. Please take a look at the below KB to understand advantages and disadvantages of Auto Monitor.