Evaluated titles in classes and representations

Hi all,

How can I use evaluated titles in Classes and Representations?

In a classic screen there before field actions you can use. I've tried this in multiple instance o CSPE and RSPE but to no avail. 

Also, how can I filter on selected fields based on a criteria in a field? For example if my Field1 is yes or no (Local menu 1) - If I select yes, the selection options available in Field 2 should differ?

Thanks.