jQuery wizard steps move before ajax call completed

Question

How can I control the move to next step according to the result of some ajax call?? the data.d returns with a bool value

$("#wizard").steps({
            onStepChanging: function (event, currentIndex, newIndex) {
                var move = false;
                if (currentIndex == 2) {
                    move = false;
                    $.ajax({
                        type: 'POST',
                        url: "Reservation.aspx/SomeFunction",
                        data: serializeData({  }),
                        contentType: "application/json",
                        dataType: 'json',
                        success: function (data) {
                            move = data.d;
                            return true;
                        },
                        error: ajaxLoadError
                    });
                }
                return move;
            },
            saveState: true

        });

Answer 1

$.ajax({
    type: 'POST',
    url: "Reservation.aspx/SomeFunction",
    async: false,
    contentType: "application/json",
    dataType: 'json',
    success: function (data) {
       move = data.d;
       return true;
    },
    error: ajaxLoadError
});