How to queue a FacesMessage from @Unwrap

[antispart]

I have a method annotated with @Unwrap that needs to add a FacesMessage error under certain circumstances. I've found that I can only add a FacesMessage from an action (listener) method and not from @Unwrap method. Is there a workaround for this or is this not the expected behavior?

@Unwrap
public String foo() {
 facesMessages.addFromResourceBundle("errors_List");
 return "foo";
}

[antispart]

Posted too soon, it seems this works now. Please disregard the previous post.