Hi, please help!

I’m trying to print a sequence diagram that has:

1. An actor talking to a boundary class.
2. The boundary class talking to a control class (all sequences)
3. The control class talking to an “Alt” interaction fragment where behaviour is different depending on a system configuration.
4. The control class talking to itself in order to evaluate the return from one of the alt fragment operations
5. A second alt interaction fragment where behaviour is dependent on the evaluation

Try as I might I cannot print the messages (or at least if I print them in tables I get some detail but not, annoyingly, the name. Inline they just get ignored.

Also because of the Sequence being an instance of a class, I can only print the classifier name not any kind of description.

I may be being a bit stupid but I seem to have followed the manual.