New Post: Odd: Can't add columns to a list

So I'm trying to create a list then add a few fields to it. I've nabbed some code but it's not seeming to work. At the moment the list is created but the new column aint added despite it saying it is. Any thunks?

function createlist() {
 alert('wotcha');
 alert(filename);

 //Create list
 $().SPServices({
    operation: "AddList",
    listName: filename,
    description: "List created for quiz: "+filename,
    templateID: 100
 });
 
 //Add field: Score
    var nfields = "";
    nfields += "<Fields><Method ID='1'><Field Type='Text' DisplayName='DayCount' ResultType='Text'></Field></Method></Fields>";
    $().SPServices({
        operation: 'UpdateList',
        listName: filename,
        newFields: nfields,
        completefunc: function(xData, Status) {
            tp1 = xData.responseText;
            alert(tp1);
            tp4 = tp1.indexOf("errorstring");
            if (tp4 < 0) {
                alert("Fields created!");
            }
            else {
                // Error creating fields!
                alert("Error creating fields!");
            }
        }
    });

 alert('should be doned');
}