Can't get this switch / case sketch to work. Any ideas?

PlasticOne:
is there an easier way to achieve a switch case within a switch case only using two inputs?

There's nothing difficult about using one switch statement inside another. I have no idea whether it's a sensible solution for whatever your problem is, but it's straight forward to code. However, you do need to get the syntax right and put your curly brackets in the right place and so on - just as with any other code.