vue2 & promise如何更新变量？

const promise = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('更新的变量值');
  }, 1000);
});

new Vue({
  data() {
    return {
      variable: ''
    };
  },
  created() {
    const promise = new Promise((resolve, reject) => {
      setTimeout(() => {
        resolve('更新的变量值');
      }, 1000);
    });

    promise.then((value) => {
      this.variable = value;
    });
  }
});