KOHLSMAN SETTING MB:1 Rules the others KOHLSMAN SETTING?

Hi,
I have a doubt on the KOHLSMAN SETTING MB:1 (and KOHLSMAN SETTING MB that has always the same value)

I have set 2 different Altimeters in my plane, the first one is bound to 1 and the other one to 2. I can set freely both of then, but when I set KOHLSMAN SETTING MB:1, this modify also KOHLSMAN SETTING MB:2.
What is the role of KOHLSMAN SETTING MB with no index?
1

Does the 2024 SDK have a lot of Red warning text about the index’s, like the 2020 SDK, or did they fix the indexing in 2024 ?