chart.setShowDataValues(Boolean.TRUE) doesn't display chart

HI Isomorphic ,

Unable to display the chart when I tried to use setShowDataValues(true) method to display the values on the chart

FacetChart chart = new FacetChart();
chart.setShowDataValues(Boolean.TRUE)
chart.setChartType(ChartType.COLUMN);
chart.setData(record[])
I am using enterprise smartgwtee5.0P

Thanks in advance
reg