Infinite ship patrol

[TuTu]

Hello guys!

I'm looking for a way to make a ship patrol indefinitely. I have already tried several solutions:
- Advanced ME option: Switch to a waypoint => Does not work
- Moose script: UNIT:Patrol or GROUP:Patrol => Does not work
- Mist script: mist.ground.patrol('NAME-OF-CARRIER-GROUP') => Does not work

Does anyone have a solution or an example of a simple mission that I can adapt?

Thank you for your help.

[Knock-Knock]

Both Advanced Waypoint and Moose Patrol methods work fine here. See attached.
CTRL+Z too accelerate time, and they will just keep going.

Infinite ship patrol.miz

[TuTu]

A big thank you for your two examples! They work. It remains to be seen why it did not work in my mission