Bug in Switch Flow, Switch Delegation or Switch Case

[dianelid]

Doesn't allow saving after including Switch Flow, Switch Delegation or Switch Case. It says that you need to add an expression, but doesn't appear where to include this expression.

[eduardoafs]

Partially fixed. Still need some error-proof verification on expresion

[eduardoafs]

Still buggy, needs to create and empty expression for each case