LineChart does not show x-Axis labels

Question

I create a LineChart using actionscript 3 and populate data values in it. The graph show lines but not any axis labels. Here is my code:
var dp:ArrayCollection = this.provider as ArrayCollection; 
var lc:LineChart = new LineChart();lc.dataProvider = dp;
lc.percentWidth = 100;
lc.percentHeight = 100;
lc.x = 0;
lc.y = 0;
lc.showDataTips =
true; 
var cAxis:CategoryAxis = new CategoryAxis();cAxis.categoryField =
"Time";cAxis.dataProvider = dp;
cAxis.displayName =
"Time"; 
var lineSeries:LineSeries = new LineSeries();lineSeries.xField =
"Time";lineSeries.yField =
"Load";lineSeries.displayName =
"Load";lineSeries.setStyle(
"form", "curve"); 
var lineChartSeries:Array = new Array();lineChartSeries.push(lineSeries);
var effect:SeriesInterpolate = new SeriesInterpolate();effect.duration = 500;
lineSeries.setStyle(
"showDataEffect", effect);lc.horizontalAxis = cAxis;
lc.series = lineChartSeries;
mp.addChild(lc);

Answer 1

I tried using the labelFunction for categoryAxis and traced the values. The problem is trace shows its getting correct values but they're not showing up on the chart.
One more thing. Is there any way I could highlight data points on the chart?