WA Insert Record bindings - default should remain NULL
I've recently changed a Dreamweaver Insert Record SB to the WA equivalent. Some of the fields are not required and when they don't have a value, there is a condition set up on the bindings so they don't display on the page if NULL. The WA Insert Record SB binding has a conditional operator that inserts an empty string "" if nothing is posted for that field. e.g: <?php echo ((isset($_POST["case_no"]))?$_POST["case_no"]:""); ?>
Is it possible to change this to NULL without going into the code and changing it there?