雷达图中radar.triggerEvent不起作用

描述:当前是关于Echarts图表中的 雷达图 示例。
 
            option = {
    title: {
        text: '基础雷达图'
    },
    tooltip: {},
    legend: {
        data: ['预算分配(Allocated Budget)', '实际开销(Actual Spending)']
    },
    radar: {
        // shape: 'circle',
        name: {
            textStyle: {
                color: '#fff',
                backgroundColor: '#999',
                borderRadius: 3,
                padding: [3, 5]
            }
        },
        indicator: [{
                name: '销售(sales)',
                max: 6500
            },
            {
                name: '管理(Administration)',
                max: 16000
            },
            {
                name: '信息技术(Information Techology)',
                max: 30000
            },
            {
                name: '客服(Customer Support)',
                max: 38000
            },
            {
                name: '研发(Development)',
                max: 52000
            },
            {
                name: '市场(Marketing)',
                max: 25000
            }
        ],
        triggerEvent: true
    },
    series: [{
        name: '预算 vs 开销(Budget vs spending)',
        type: 'radar',
        // areaStyle: {normal: {}},
        data: [{
                value: [4300, 10000, 28000, 35000, 50000, 19000],
                name: '预算分配(Allocated Budget)'
            },
            {
                value: [5000, 14000, 28000, 31000, 42000, 21000],
                name: '实际开销(Actual Spending)'
            }
        ]
    }]
};