var data = {
            labels: ["a","b","c","d","e","f","g"],
            datasets: [
                {
                    label: "My First dataset",
                    fillColor: "rgba(84,255,159,1)",
                    highlightFill: "rgba(84,255,159,0.75)",
                    data: [5,3, 4, 2, 1, 3, 1]
                    },
            ]
        };