如何在Webix窗口中使用正确的验证消息启用/禁用提交按钮？

var win = webix.ui({
  view: "window",
  id: "myWindow",
  head: "My Window",
  body: {
    view: "form",
    id: "myForm",
    elements: [
      { view: "text", label: "Name", name: "name" },
      { view: "text", label: "Email", name: "email" },
      { view: "button", value: "Submit", id: "submitButton" }
    ]
  }
});

$$("myForm").elements.name.rules = {
  // 添加验证规则
  isNotEmpty: webix.rules.isNotEmpty,
  isEmail: webix.rules.isEmail
};

$$("myForm").elements.name.invalidMessage = "Please enter a valid name";
$$("myForm").elements.email.invalidMessage = "Please enter a valid email";

function checkFormValidation() {
  var form = $$("myForm");
  var isValid = form.validate();
  
  if (isValid) {
    $$("submitButton").enable();
  } else {
    $$("submitButton").disable();
  }
}

// 在表单字段值发生变化时调用该函数
$$("myForm").attachEvent("onChange", checkFormValidation);

win.show();