MD11 Pushback no start

[bertgK]

Hi
FS2024 / MD11 TFDi Design

The tractor connect, Marshall say "release parking brakes please"...
After this the tractor remains connected and nothing moves. When a select GSX menu everything is normal with pushback options (Interrupt : Yes, NO and change direction)

This anomaly remains regardless of the airport

Edit :  All it's OK : it was a bad assignment of a Parking Brake key on FS2024...