Custom list-item name

Hi,

I have a class 'interaction' and I show a list of it in the inspector, it looks like this:

By default it shows every item as "Element X" (with X being a number). I got it to show it as a proper string, by setting a name. Now I would like it to be "Name (Id)", in the case of my screenshot that would be "Test (0)".

I tried overriding the ToString() method, but this doesn't work.

Any ideas how to do this ?

Thanks ! -Pablo