求助！双向控制问题？

听不得

代码如下：怎么不能双向控制呢？？
<!-- Swiper -->

   <div class="swiper-container swiper-container1">
    <div class="swiper-wrapper">
        <div class="swiper-slide">1111111111111</div>
        <div class="swiper-slide">22222222222</div>
    </div>
</div>

<div class="swiper-container swiper-container2">
    <div class="swiper-wrapper">
        <div class="swiper-slide">aaaaaaaaaa</div>
        <div class="swiper-slide">bbbbbbbbbbbb</div>
    </div>
</div>
<script src="dist/js/swiper.min.js"></script>
<script>
var swiper1 = new Swiper('.swiper-container1', {

    });

var swiper2 = new Swiper('.swiper-container2', {

    });
        Swiper1.params.control = Swiper2;
        </script>