vue3中的vant怎样解决点击弹出层的确认按钮后两个都发生一样的变化的问题

Question

代码是这样的

<div v-for="(item,index) in checkedData" :key="index">
              <div style="background: #fff;margin-top: 5px;">
                <h6>第{{index+1}}次下肢伤痛详细信息：</h6>
                
                {{item}}
                <van-field v-model="item.dates" is-link readonly :name="'datetimePicker_'+index" label="伤痛发生时间" class="lower" placeholder="请选择" @click="btns(index)" />
                <van-popup v-model:show="showPicker" position="bottom">
                  <van-datetime-picker v-model="currentDate" type="date" :default-index="50" :formatter="formatter" :min-date="minDate" :max-date="maxDate" @confirm="onConfirm" @cancel="showPicker = false" />
                </van-popup>
              </div>
              
              <van-field :name="'lateral_CB_'+index" label="下肢伤痛侧别" class="lo100">
                <template #input>
                  <van-radio-group v-model="item.date" direction="horizontal">
                    <van-radio :name="'left_'+index">左</van-radio>
                    <van-radio :name="'right_'+index">右</van-radio>
                  </van-radio-group>
                </template>
              </van-field>
            </div>

    const update = (value: any) => {
      listData.values = value;
      if (value == "") {
        listData.checkedData = [];
      }
      for (let i = 0; i < value; i++) {
        // @ts-ignore
        // ["date" + i]: ""
        listData.checkedData.push({ date: "", dates: "" });
      }
    };
    /* 弹窗 */

    const showPQX = ref(false);
    const onConfirm = (value: any) => {
      console.log(timeFormat(value))
      // timeFormat(value);
      showPicker.value = false;
    };
    const onConfirmQX = (value: any) => {
      listData.result_QX = value;
      showPQX.value = false;
    };

    const timeFormat = (time: any) => {
      let year = time.getFullYear();
      let month = time.getMonth() + 1;
      let day = time.getDate();
      //  + day + '日'
      return year + "/" + month + "/" + day + "";
    };

这里是根据用户输入的数量去生成表单，这样的级联框怎么去获取每个v-model
怎样将这个弹出框绑定对应的v-model的值？就是想达到和单选按钮一样的效果，现在就是点击弹出层的确认按钮后两个都发生一样的变化