Group is mirrored (or not)

[lUNi]

Wall is mirrored (or not)

Continuing the discussion from Group is mirrored (or not): Hey all Im looking for a way for dynamo to check if walls are mirrored. I tried this method offered by @Yna_Db: [error] but as he then told me (when he saw my printscreen and realized i need it for walls) - this code is only good for family instances. Any ideas?

Thanks!