Material: What am I doing wrong?

I want to create some material controls.
I did that for the Albedo map, like some Color Adjustments, etc.

I copied my node-based network and applied it to the Roughness.
But when I create an Instanced Material - I don’t get the options to control the same features just for my Roughness map.

Here is a short video that explains the problem in detail:

Thanks a lot, appreciate any little help!

if someone else is looking for an answer: each parameter needs to have a unique name.