Bad_Stale Error When Accessing Container Custom (or any) Property

I am trying to access a property on a parent container and the expression keeps returning Bad_Stale.

The expression: {.../this.custom.parameter}

Architecture:

FlexContainer (with desired property)
          CoordContainer
                    Label Component

Not sure why yours is not working but with the same setup I can see and reference custom properties from a parent window

I would make sure the project has been saved since the parameters have been added

If I put the custom property on the view, it works just fine. But when accessing it on the root container it doesn’t work.