eChartjs 中datazoom 设置startValue 和endValue 无效

Question

dataZoom: [

                    {
                        type: 'inside',
                        // start: 50,
                        // end: 100,     
                        
                    },
                    {
                        show: true,
                        
                        type: 'slider', //滑动块
                        top: '90%',
                        rangeMode: "value",
                         startValue :'2018-07-17 23:39:54',
                        endValue:'2020-07-17 23:39:54',
                    }
                ],