label表示总数，怎么表示echarts 柱状配置项内容和展示

      app.title = '堆叠条形图';

option = {
    tooltip : {
        trigger: 'axis',
        axisPointer : {            // 坐标轴指示器，坐标轴触发有效
            type : 'shadow'        // 默认为直线，可选为：'line' | 'shadow'
        }
    },
    backgroundColor:'#ffffff',
    legend: {
        top:25,
        data: ['PV', 'UV','参与抽奖人数','带来微信粉丝量']
    },
      xAxis:  {
        type: 'value'
    },
    yAxis: {
        type: 'category',
        data: ['带来微信粉丝量','参与抽奖人数','UV','PV']
    },
    grid:{height:'40%',width:'60%', containLabel: true},
    series: [
        {
            name: '带来微信粉丝量',
            type: 'bar',
            stack: '参与量',
            data: [{value:2008,label:{show:true,position:'right'}},0, 0, 0]
        },
        {
            name: '参与抽奖人数',
            type: 'bar',
            stack: '参与量',
          
            data: [0,{value:2022,label:{show:true,position:'right'}}, 0, 0]
        },
        
        {
            name: 'PV',
            stack: '参与量',
            type: 'bar',
                        
            data: [0,0, 0, {value:3285,label:{show:true,position:'right'}}]
        },
        {
            name: 'UV',
            stack: '参与量',
            type: 'bar',
                       
            data: [0,0, {value:2034,label:{show:true,position:'right'}},0 ]
        },
        
    ]
};