How to view CAS user variables

[KevinMurphy]

Say I create a variable in CAS, 5 stored into fka. If I go to Vars and then user variables, it doesn't appear. Only the home variables appear there. How would I view the CAS User variables then?

And, also when I create a CAS variable why doesn't it say "Are you sure you want to create a variable?"

Thanks in advance