```
val x: ParentBar = ChildBar()
x.foo = ChildFoo...
# announcementsa
Andreas Sinz
12/09/2018, 11:07 AM Copy code
val x: ParentBar = ChildBar()
x.foo = ChildFoo2() //Setting works fine
println(x.foo) //ChildFoo2() as ChildFoo blows up at runtimeAndreas Sinz
12/09/2018, 11:07 AMval x: ParentBar = ChildBar()
x.foo = ChildFoo2() //Setting works fine
println(x.foo) //ChildFoo2() as ChildFoo blows up at runtime