How to hide zero values in Column chart

I am using column chart and displaying those value on top of each bar. I don't want to show the values if they are 0. How to do that? Here is my piece of code

var series = {  data: [],   
                dataLabels: {
                    enabled: true,
                    color: 'black',
                    align: 'right',
                    x: -3,
                    y: 3,
                    style: {
                        color: '#333',
                        fontWeight: 'bold',
                        fontSize: '12px',
                        fontFamily: 'Trebuchet MS, Verdana, sans-serif'
                    }
                },
                pointWidth: 28
};