🐛 [Bug]: 官网demo页面，预览时，下拉框内容选择不生效。控制台有JS报错

[chenyl1982]

Environment

edge

Version

latest

Version

latest

Link to minimal reproduction

https://opentiny.design/tiny-engine#/tiny-engine-editor

Step to reproduce

What is expected

选择后，下拉框显示选择的项目。

What is actually happening

选择后，下拉框里面还是空的。

What is your project name

暂无

Any additional comments (optional)

无

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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Title: 🐛 [Bug]: On the official website demo page, when previewing, the content selection in the drop-down box does not take effect. There is a JS error in the console

[LKCheng]

需绑定变量，可正常选择

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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Variables need to be bound and can be selected normally