如何在AMCharts 4中以编程方式突出显示列？

let chart = am4core.create("chartdiv", am4charts.XYChart);
chart.paddingRight = 20;

let series = chart.series.push(new am4charts.ColumnSeries());
series.dataFields.valueY = "value";
series.dataFields.categoryX = "category";
series.columns.template.width = am4core.percent(50);

let highlightState = series.columns.template.states.create("highlight");
highlightState.properties.fill = am4core.color("#FF5722");

series.columns.template.events.on("over", function (event) {
    event.target.setState("highlight");
});

series.columns.template.events.on("out", function (event) {
    event.target.setState("default");
});