{ "KillerType": "*", "VictimType": "Helicopter", "DamageType": "*", "Messages": [ "{victim}被击落了，世界又恢复了和平。" ] },

"KillerType" can't enter Player , (unable to display)
But i need know who killed Helicopter ,
Which I have to change  ?

The current version can't reliably determine the player who destroyed the helicopter, hence it can't provide that at the moment.