I think the best way to do this is to look at the set's type (`$set->assignment_type()`

) and see if it matches `/gateway/`

. If you're looking at the set versions that students are actually working, the set name will have `,v`

appended, where *N*

is the version number.
*N*

That said, I don't know that the set object is available in the PGcourse file.

Gavin