vue data update problems

When uni-app build tab, change the method of data can not be updated Boolean value of v-if

In the print function is to modify a success, but did not respond in the page

Layout is as follows:

<swiper :current="tabCur" class="swiper-box" duration="700" circular @change="changeDrawList">
            <swiper-item class="tab-content" v-for="(items,indexs) in drawList" :key="indexs">
                <scroll-view style="height: 100%;  overflow: hidden;" scroll-y @scrolltolower="onBotton">
                    <!-- 加载loading图标 -->
                    <view class="content" :style="{height:height1 + 'px'}" v-if="items.loadModal">
                        <view class="cu-load">
                            <view class="gray-text">
                                <view class="loading">
                                    <text></text>
                                    <text></text>
                                    <text></text>
                                    <text></text>
                                    <text></text>
                                </view>
                            </view>
                        </view>
                    </view>
                    <block v-else>
                        <view class="ma-desc">
                            <text class="te-desc">  {{items.message}}</text>
                            <text class="te-author">{{items.createTime}}</text>
                        </view>
                        <!- the work area -> 
                        <View class = "Draw-List">
                            <view class="drawItem" v-for="item in items.data" :key="item.draw_id">
                                <view class="draw">
                                    <!-- 短边优先 -->
                                    <image :src="item.draw_image_url" mode="aspectFill" lazy-load></image>
                                </view>
                                <view class="drawAuthor">
                                    <image :src="item.draw_tou"></image>
                                    <text class="name">{{item.draw_name}}</text>
                                </view>
                            </view>
                        </view>
                    </block>
                </scroll-view>
            </swiper-item>
        </swiper>

vue in operation:

getInfo () { 
                the this .drawList [ the this .tabCur] = List; 
                // should be completed after the callback request provided 
                the setTimeout (() => {
                     // this.drawList [this.tabCur] to false .loadModal =; 
                    the this . $ SET ( the this .drawList [ the this .tabCur], "loadModal", to false ); // can not handle this, only the successfully modified values in the array of objects 
                    the this $ forceUpdate ();. liberator // mandatory refresh 
                }, 1500 ) ; 
            }