uniapp scroll-view @refresherrefresh 动态高度 无法触发

因为要适配高度，在computed中动态设置了高度，然后下拉刷新的时候，就只能拉很短的距离，无法触发@refresherrefresh方法

关键代码：

         :refresher-threshold="100" @refresherpulling="onPulling" @refresherrefresh="onRefresh" @refresherrestore="onRestore"  
         @refresherabort="onAbort" @scrolltolower="lower" name="contetn " class="bg-white myscroll">  
            <view v-if="isNull" class="flex solid-bottom padding justify-center text-xl">暂无数据</view> ```   

js：
``` javascript  
computed: {  
            style() {  
                let topHeight = this.CustomBar + 60  
                let sys = uni.getSystemInfoSync()  
                let phoneHeight = sys.windowHeight  
                let scrollerHeight = (phoneHeight - topHeight)  
                var style = `height:${scrollerHeight}px;`;  
                console.log(topHeight)  
                console.log(scrollerHeight)  
                return style  
            }