Creating a Plugin that will save the PDF to a specific location when signed.

I have been working to create a system where when one signs a document, the file is automatically saved to a specific location and the file name is determined by certain fields entered within the document.  At first I believed that this could be done using javascript within the pdf, but am finding that I would instead need to make a plugin for Acrobat and Reader.  Below is a link to where I had posted on the Javascript forum about this and their suggestions:

http://forums.adobe.com/message/5652259#5652259

I have currently used their suggestions to create the following Action in Acrobat:

//Create the file name from text fields in the form

     //Credit to Gilad D for the first part of this script.

     var myFileName = this.getField("PATIENT_ID").valueAsString + "#" + this.getField("PATIENT_DOB_3").valueAsString + "#C#" + this.getField("PROCEDURE_NAME").valueAsString;

     //Save the file

     this.saveAs("/C/Users/ahill.CNC/Desktop/PDF test save/" + myFileName + ".pdf");

The above action works, but it currently isn't activated when the form is signed, nor would it work with Reader, which is something I would need.  If anyone has any sort of guidance on how to do this, it would be greatly appreciated.