当事件发生时，表单将把数值重新设置为句点并显示提示信息。

When it does, the form set its value back to the simple period and shows a message.

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如何显示或设置网络参数值？

How can I display or set values for network parameters?

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我们要做的第一件事情是设置我们刚才应用的规则（“三个符号”规则），这样，红色“X”就会显示在数值大于80的地方。

The first thing we need to do is to set the rule we just applied (the "three symbols" rule) so that the red "X" shows up for values greater than 80.

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