Display name of a cell child on schematic

Hi,

I have a design with generic cells with identical symbols. These cells contain different devices but always a single one (blackbox). 

I would to know if it was possible to display the name of the device inside my cells. Something like an Interpreted Labels. The point being to do this automatically as soon as the child is modified. So ideally having a callback with a skill script modifying what my top cell is displaying.

Thanks in advance,

alg