Advanced Menu - how to reference case properties?

Hi there,

I am working on an app with an advanced menu (has a parent case, and a child case, and the child case has a follow-up "evaluation" form that needs to be filled in periodically). How can I reference case properties of both the parent case and the child case as hidden values in my form? I like to keep them as hidden values at the end of my forms for easy reference but not haven't been able how to do this in an advanced menu.

I am currently able to display some of these case properties in a label with the following code:

But when I go to mimic this expression inside a hidden value, I get a parse line 1 error.

Thanks for your help,

You should be able to use the inner portion between the "" marks [IE: instance(..../case_name ] as the calculation expression for a hidden value.