entering the code you provided:
<?php echo (date("Y-m-d h:n:s", strtotime("+1 year"))); ?>
as the value for4 the data column in the insert record behavior do what you are asking.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.