Setting Environmental Variables in Edit Configurations

I'm sure there must be a simple answer to this question that I'm missing but here you go:

Why is it that, in the Run/Debug Configurations window, Java Applications and Junit have an "Environment Variables" field (where you can set the env vars you want to have set for the jvm) and ScalaTest, Scala Console, and Scala Script targets do not?

Thanks in advance for any insite.