Need help with folder level javascript to automate "save button" on a fillable form

Question

I have been racking my brain for the past 6 hours trying to get a simple save button to work.
Background: I am using Acrobat Pro 11 to create a save button on a fillable form. My intent is for the end users (my team of 3, whos computers I have access to) to be able to fill out the form, click save, and have the filename appended with date and other info and saved to a local folder on their machine.
I am attempting to take the default form name i.e. Support Call Log.pdf and have three of the feilds within the form generate a new file name. --> Support Call Log_Brad_121_2015
End users will fill out the form using adobe viwer X.
Instead of putting the code that I have tried, modified, and tried again and again. I would like to ask for a fresh start and then see if I can locate my error after. I need to know what to put in my folder level script, line for line.
I also need to know the correct syntax and format to establish a new file name with the extracted feild data, saved to the same exact file path as the original document.
Any and all help will be greatly appreciated, I am about to go crazy!!!

Answer 1

Didn't let me do it, invalid. So, here is what I have now changed my button code to:
//get field value
var fv1 = getField("Technician:").value;
var fv2 = getField("Date Received:").value;
var fv3 = getField("Unit Number:").value;
// Split Path into an array so it is easy to work with
var aMyPath = this.path.split("/");
// Remove old file name
aMyPath.pop();
var NewFileName = "Support Call Log" + "_" + fv1 + "_" + fv2 + "_" + fv3 + ".pdf";
NewFileName = NewFileName.replace(/[\s\!\?\<\>\'\"\*\/\\\=\?\^\`\{\}\|\~]+/g, "_");
aMyPath.push(NewFileName);
//save
mySaveAs(this,aMyPath.join("/"));
Im still getting the error dialogue box, and nothing shows in my javascript debugger window when I click the button. Seems to be something goofy with my Folder level script:
var mySaveAs = app.trustedFunction(
     function(oDoc, cPath, cFlName)
          cPath = cPath.replace(/([^/})$/, "$1/");
          try{
               oDoc.saveas(cPath + cFlName);
               catch(e){
                              app.alert("Error During Save");