能否根据validator (rule, value, callback)，动态的改变required

[lichenglong-blog]

` rules: [{ required: true, message: 'Please confirm your password!',

                            validator: (rule, value, callback) => {
                                if(value===10)
                                rule.required = false
                                console.log("rule", rule, value,)
                                return rule
                  
                            },
                        }],`

###rules里required初始化是true, 能否根据条件动态的设置required为false，如果没有还有什么便捷的方式可以实现？