Just as a disclaimer, I have used GSX with this aircraft prior without any issues. This issue happened to start out of nowhere with no changes. Not sure if an update to GSX may have caused this possibly? This issue runs with the same issue with other aircraft such as the iniA320. The unfortunate part is I cannot edit the custom rules for the parking brake because it is blocked by the "Parking Brake Requirement" to even open the menu. Could this be addressed please?