To ensure that you receive valid data, and don't write bad information to the XML, you access the parameters and set the ok variable accordingly.

要确保能够接收到有效的数据，并且避免将错误信息写入XML，我们可以访问其参数并相应地设置ok变量。

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Name: string variable with read and write access.

名称：字符串变量可以读写访问。

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Age: integer variable with read and write access.

年龄：整型变量可以读写访问。

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