Problem with a Form field, need help

Question

I work for a small police agency and I am our IT guy.  Most of my IT tasks have many been hardware and system software and networking.  I have been trying to learn and teach myself programming.  I also create forms for agency use.  I have been working on a form and want to add increased functionality to allow our officers to issue a citation with the least amount of time spend on the form.  One main issue is that we have to have a unique citation number.  We have come up with a format that will specify as such:  YYYY(Officer's 4 Digit ID Number)-(Auto Incrementing number).  So, for instance, if this is my 55th citation issued and my ID number is 0100 the citation number would appear like this:  20120100-0055.  The ID number will be entered by the officer earlier in the form.  The problem I can't seem to vision around is how I will keep the number to increase by one and have it maintain that way.  I want it to be form specific, because each officer has their own vehicle and MDT that the PDF will reside on at this time. 
So far, what I have toyed with in the past 30 minutes is this:
var Ticker = 0001;
var Year = getFullYear();
var x = getField('OfcIDNo').value;
Eventually the form will be autocreated by a program that will be run from a centralized server.  I have even thought about running the from from a server and taking all the data and INSERTing it into a SQL Server 2008 Express DB table on a server, but I'd still have to have the citation number created at the form as the officer fills in the data.  The last four of the number doesn't have to reset when the year changes, but it would be a plus.  Any information anyone can help with I would appreciate it. 
Thanks in advance

Answer 1

Seems like it was too easy, is it safe to assume that javascript and javascript functioning in Adobe PDF is a bit different learning curve?  That does help, the only thing that I'm missing is the Auto Incrementing 4 digit number.  I was toying with assigning a variable in the globals that would auto increment but having problems with how I would execute it.  Each copy of the form would be installed on each officers MDT so the number would be specific to that officer. The format will be YYYY"OFCIDNo"-####.  I would like to assign the number to the global variable on the execution of the Print Dialog.  This way the officer an clear the form if he/she needs to start over and then it stays whether or not they close the file and reopen it. 
That syntax has been very helpful to get started. 
Thank you,
David