This has nothing to do with channel event triggers. Thing status is something completely different (and is usually just permanently ONLINE).
Example of UI rule channel triggering here
Looks like there may be a UI bug and you have to hand-edit it?
I can’t imagine what you’re actually doing here.
You should only need to put your complete DSL rule in a file named xxx.rules in the /rules folder, no other action needed openhab.log should show if that loads okay.
Are you trying to import in the UI somehow?