When using nested choices - how to access them via script?

Hi everybody,

sorry for maybe asking dumb questions, but I am completely new to MSE.

While helping working on a Template for the TCG named Redemption I came across the issue that when doing nested choices for card fields I am struggling to access those via inline-scripts used within the enabled-value.

Here is what I am talking about:

card field:
type: multiple choice
name: Brigade1
choice: Good Dominant
choice: Evil Dominant
choice: Artifact
choice: Curse
choice: Good Fortress
choice: Evil Fortress
choice:
name: Good Brigade
choice:
name: All Good
line below: true
choice:
name: Blue
enabled: { not chosen(choice:"All Good",card.Brigade1) }
choice: Clay
choice: Gold
choice: Green
choice: Purple
choice: Red
choice: Silver
choice: Teal
choice: White
choice:
name: Evil Brigade
choice: All Evil
choice: Black
choice: Brown
choice: Crimson
choice: Evil Gold
choice: Gray
choice: Orange
choice: Pale Green
So the nested choice menu works. But 1st thing I recognised is that the "line below" is not drawn. Second problem is: How do I get the enabled evaluation of the script working?

Since the choice named "Good Brigade" is a "sub-choice" of the choice named "Brigade1" I tried to access it via "card.Brigade1.Good_Brigade" which resulted in an error. Also accessing it via enabled: { not chosen(choice:"Brigade1 All Good",card.Brigade1) } does not work (it does nothing).

Question is: How can I access such nested choices? And how can I get separating lines working with them? Already did a search within then boards but did not find anything yet.

Thank you in advance!

Bye