Umberto, you said, the A321 is OK? But I think, in the aircraft.cfg is a similar text:
[exits]
number_of_exits = 3
exit.0 = 0.4, 45.50, -6.0, 7.0, 0 //openclose rate percent per second, longitudinal, lateral, vertical positions from datum (feet), type (0=Main 1=Cargo 2=Emergency)
exit.1 = 0.4, -33.50, 5.85, 0.0, 1 //openclose rate percent per second, longitudinal, lateral, vertical positions from datum (feet), type (0=Main 1=Cargo 2=Emergency)
exit.2 = 0.4, 29.90, 6.0, 1.0, 2 //openclose rate percent per second, longitudinal, lateral, vertical positions from datum (feet), type (0=Main 1=Cargo 2=Emergency)