Confirmed. @ActionInput annotations are missing:

https://github.com/openhab/openhab-addons/blob/main/bundles/org.openhab.binding.freeboxos/src/main/java/org/openhab/binding/freeboxos/internal/action/PlayerActions.java#L53

Only class PlayerActions has to be changed.

@florian-h05 : I have a doubt. How this action without @ActionInput can be supported by UI ?

From the linked code above I can see it has a @ActionInput annotation.

From the linked code above I can see it has a @ActionInput annotation.

Yes, you're right ! So, it is normal that they appear in UI.

What is missing is only label and description parameters.

I am going to extend this issue to all bindings defining action inputs without any label. This is a lot...

@florian-h05 : maybe you could use the name as label in UI when there is no label provided ?
It could be changed in UI side or in core side in the helper class we created.

That’s what I’ve also thought.
I would tend to apply that default in the UI.

I would tend to apply that default in the UI.

Yes, I think it is better.

PS: we have 182 input parameters without label.

Applied in the UI: openhab/openhab-webui#2840.
The UI now also displays the output description if provided.