- [ ] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### Version 4.2.6 ### Environment 版本 124.0.6367.119(正式版本) (64 位) ### Reproduction link [](https://codesandbox.io/p/devbox/334dzn) ### Steps to reproduce option选择项中的value值为number类型,filterOption方法报错。因为JavaScript 的 Number 类型没有 toLowerCase 方法 ### What is expected? filterOption方法兼容value值为Number选择的搜索 ### What is actually happening? filterOption方法报错 <!-- generated by issue-helper. DO NOT REMOVE -->