Custom Component Group

[Elsemeravin]

Hi all,

I am currently playing with the components definition files and I would like to use the 'custom group' feature, as it seems to be able to do what I want.
On the Components.txt file there is this description:

"Custom Group:
A number which allows the creation of custom Groups of components. This number is referenced by the Ship Sizes when they use the Abilities "Do Not Allow Components of Custom Group" and "Only Allow Components of Custom Group"."

However, when trying to use these "Do Not Allow Components of Custom Group" or "Only Allow Components of Custom Group" in the VehiculeSize.txt, I cannot make it work properly.
Does anyone have a hint about how to use there custom group, for example to make a compnent usable only by one type of ship?

Thanks