var data = [6];
data.push([10, Math.round(Math.random() * 100)]);

$('#jqChart').jqChart({
        title: { text: 'Change Series' },
        border: { strokeStyle: '#6ba851' },
        background: background,
        legend: { visible: false },
        axes: [
                {
                    type: 'none',
                    location: 'bottom',
                    minimum: 0,
                    maximum: 6
                },
                {
                    type: 'linear',
                    location: 'left',
                    minimum: 0,
                    maximum: 100
                }
              ],
        series: [
                    {
                        type: 'line',
                        data: CallWebMethod() //REPLACING THIS WITH "data" WORKS
                    }
                ]
    });
}





function CallWebMethod() {

    $.ajax({
        type: "POST",
        url: "Default4.aspx/CallWebMethod",
        data: '{name: "" }',
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        async: true,
        success: OnSuccess,
        failure: function (response) {
            alert(response.d);
        }
    });
}

function OnSuccess(response) {
    return response.d;
}

**[System.Web.Services.WebMethod]
    public static List<MyGenericType<dynamic>> CallWebMethod(string name)
    {
        List<MyGenericType<dynamic>> myList = new List<MyGenericType<dynamic>>();
        myList.Add(new MyGenericType<dynamic>() { x = 10, y = 20 });
        myList.Add(new MyGenericType<dynamic>() { x = 10, y = 20 });
        myList.Add(new MyGenericType<dynamic>() { x = 10, y = 20 });
        return myList;

    }**