Cannot find JDK Dependency - JetBrains MPS

Question

I'm watching the first tutorial on MPS over at https://youtu.be/Uq4o4TCLhCQ?t=5m5s and he's talking about adding a dependency (JDK), but when I follow the steps do add it, JDK doesn't show up on my list like it does with his list.

I've tried adding other random things from that list which contain JDK but, as expected, doesn't help.

How do I add JDK as a dependency?

Answer 1

A silly mistake, but I didn't realise that he had the Solution node highlighted, whereas I had a file highlighted. So right-clicking the solution node > Properties > Dependencies > JDK will show JDK in the list.