我用UnityScript编写了这段代码。我需要用C#编写它。当我使用在线转换器时，似乎出现了编译器错误。问题是什么？
它将用于在UI文本中显示3秒钟的文本。我是Unity的新手，所以我可能没有解释好。
UnityScript程式码：

private var timer: float;
private var showTime: float;
private var activeTimer: boolean;
private var message: String;
private var uiText: UI.Text;

function startTimer()
{
    timer = 0.0f;
    showTime = 3.0f;
    uiText.text = message;
    activeTimer = true;
}

function Start()
{
    uiText = GetComponent(UI.Text);
}

function Update()
{
    if (activeTimer)
    {
        timer += Time.deltaTime;

        if (timer > showTime)
        {
            activeTimer = false;
            uiText.text = "";
        }
    }
}

function showText(m: String)
{
    message = m;
    startTimer();
}

C# Converter的输出似乎有一些问题：

private float timer;
private float showTime;
private bool  activeTimer;
private string message;
private UI.Text uiText;

void startTimer()
{
    timer = 0.0ff;
    showTime = 3.0ff;
    uiText.text = message;
    activeTimer = true;
}

void Start()
{
    uiText = GetComponent<UI.Text>();
}

void Update()
{
    if (activeTimer)
    {
        timer += Time.deltaTime;

        if (timer > showTime)
        {
            activeTimer = false;
            uiText.text = "";
        }
    }
}

void showText(string m)
{
    message = m;
    startTimer();
}