I am using Lifecycle Designer, and we are on version 8. I have looked through the Acrobat 8 PDF bible, and have also been searching the web but cannot figure out a way to do what I want. I see a lot of scripts, where you can set up a submit button to only work if a text box is filled out, but how do I do that based on a digital signature being unsigned. I have seen scripts that make the dig. signature mandatory, but even when signing it, the script still thinks it is null. Another option that would work would be if the submit button was read only, until the digital signature was signed. We are not using the email submit button or the HTTP submit buttion because we wanted to have the entire PDF returned not just the xml. Is what I am trying to do possible? I do not have much experience with java script of formcalc.