I am not sure whether I posted in the right place but here's the deal: I have a form and a subform based on two tables and on the form I create a mathematical expression concerning a field which is based on another. The results are correct but of course the values in the table remain the same (null). Is there a way to have a formula in the table and then when I create the form based on that table to have the formula ready? BTW where are the data stored if they are not stored in that table?