Procedure or function expects parameter which was not supplied

My .Net Code

Code:

# connDO.Open();
#                     SqlCommand comm = new SqlCommand("DOrders.dbo.p_Update", connDO);
#                     comm.CommandType = CommandType.StoredProcedure;
#                     daDirectOrders.UpdateCommand = comm;
#  
#     comm.Parameters.Add("@UOrderNumber", SqlDbType.Int, 32, uOrderNumber.ColumnName);
#                     comm.Parameters.Add("@ConfirmationCode", SqlDbType.VarChar, 50, confirmationCode.ColumnName);
#                     comm.Parameters["@ConfirmationCode"].SourceVersion = DataRowVersion.Original;
#                     comm.Parameters.Add("@Carrier", SqlDbType.VarChar, 50, doCarrier.ColumnName);
#                     comm.Parameters.Add("@Tracking", SqlDbType.VarChar, 50, doTracking.ColumnName);
#                     comm.Parameters.Add("@OrderID", SqlDbType.Int, 32, orderID2.ColumnName);
#                     comm.Parameters["@OrderID"].SourceVersion = DataRowVersion.Original;
#                     comm.Parameters.Add("@LineItem", SqlDbType.Int, 32, lineItem.ColumnName);
#                     comm.Parameters["@LineItem"].SourceVersion = DataRowVersion.Original;
#  
#                     daDirectOrders.Update(dataSet);
#                     connDO.Close();

My Stored Procedure:

Code:

#  @UOrderNumber int,
#     @ConfirmationCode varchar(50),
#     @Carrier varchar(50),
#     @Tracking varchar(50),
#     @OrderID int,
#     @LineItem int
#  
# AS
# BEGIN
#  
#     SET NOCOUNT ON;
#  
#     UPDATE Orders 
#         SET UOrderNumber = @UOrderNumber
#         WHERE ConfirmationCode = @ConfirmationCode
#  
#     UPDATE OrdersDetail
#         SET Carrier = @Carrier, Tracking = @Tracking, LastUpdated = GETDATE()
#         WHERE OrderID = @OrderID and LineItem = @LineItem
#  
#  
# END

When I run, I get the following error:

Procedure or function 'p_update' expects parameter '@Carrier' which was not supplied

Why isn't is recognizing my parameter? Also, it does not give a problem with @UOrderNumber and @ConfirmationCode. And when I do Parameters.AddWithValue and pass a string value, it does work. The problem is, that my value has to be a dataColumn from my dataset and addWithValue does not take a dataColumn from what I saw. (correct me if I'm wrong)

Thanks!