Yeah, they won’t be listed (any place useful***), you just have to know they exist and then do the setup.
i.e. insert into dataset expression(s) in your SSRS report
Note per user comment in another, related thread, these may not be available on some of the earlier versions of E10. I’m not sure when they were added, can only verify they will work on 10.1.6
*** You can verify they exist if you browse the tables in the SSRS Query Designer
