Thanks for implementing the new TMZ codes and monitoring frequencies.
One comment: w‌hen nearing the TMZ, the SD pop-up window asks to actively CALL on the TMZ-monitoring frequency. I am not sure that this is really wanted. From publications I read, the pilot is only asked to use the TMZ squawk and to monitor (PASSIVELY‌) the related Monitor-Frequency ... contact would only be established by the air traffic controller as and when required. Please check - thanks.