I have a subform which records the item purchased, price, etc. I have a calculated field in the UnitsInStock field that will take the current units in stock and subtrack the quantity that the user order. I want to run an update query from a command button when they submit the order to update the tblProducts table with the new UnitsInStock number. When I use the expression builder for the command button, my query isn't listed. Is this the right way to go about it? I'm not sure that my query is set up right either, since I am using data from the form.