其他脚本访问时Unity方法不起作用？

我已经制作了一个统一的多人游戏，并且有一个ac＃script。 它包含一个方法public void UpdatePlane来更新对手的飞机。
在这个方法中，我想改变一个值（ private bool oppdead为true或者如果只是private bool oppdead因为任何原因而无法工作， int opponentisdead是1 ）或者如果我根本不能更改那里的值甚至只是调用方法makeoppdead()来改变那里的价值观。 但究竟那些东西在他们应该的时候不会改变。 我知道在UpdatePlane方法中，死亡变为真，我收到Log ("oppplayer dead is true")但是值没有改变，方法makeoppdead()没有执行，我没有得到日志("method was called") 。 令我惊讶的是，另一方面，它可以毫无问题地改变opponentPrefab Prefab。 这是代码：

  public GameObject opponentPrefab; public Rigidbody2D oppPlane; private bool _multiplayerReady; private string _myParticipantId; private bool oppdead; int opponentisdead = 0; bool boolopponentisdead; float opponentdistance; float distancex; float distancey; float distance; public void UpdatePlane(string senderId, float x, float y, float z, bool death, float oppdistance) { MultiplayerController.Instance.GetMyParticipantId(); opponentdistance = oppdistance; if (death) { //this stuff is NOT being executed: makeoppdead(); opponentisdead = 1; boolopponentisdead = true; //but I do receive this message: Debug.Log("oppplayer dead is true"); } //this stuff is being executed: opponentPrefab = GameObject.Find("Opponent"); opponentPrefab.transform.position = new Vector3(x, y, 0); opponentPrefab.transform.rotation = Quaternion.Euler(0, 0, z); } void makeoppdead() { Debug.Log("method was called"); //do some stuff to provide he is really dead }