[ID3 JS] Problem relinking files

Question

Hi folks, I need to copy specific filetypes from a document to my disk. I've wrote the script below to help me automate this task. When I use the copyLink method InDesign updates the document to use new link location. To fix this I relinks all affected links back to the original filepath. However when relinking InDesign won't copy all my links. If I disable the relinking all files gets copied. My relinking function is obviously not well designed. I was hoping one of you could give me a hint or two?
var myDocument = app.documents[0];
var files = myDocument.links;
var myStr = prompt ("Substring");
if (myStr != null) {   var myFolder = Folder.selectDialog ("To where");   }
if (myFolder != null)
      for (var i = 0; i < files.length; i++) {
         copyFiles(files[i], myFolder+"/"+myStr, true);
function copyFiles(myLink, linkTo, doRelink) {
   var myOldFilePath = myLink.filePath;
   var myFolder = new Folder (linkTo);
   var myFile = new File(myFolder+"/"+myLink.name);
   if (!myFolder.exist) {
      myFolder.create();
   if (!myFile.exists) {
      myLink.copyLink(myFile);
      myFile.close();
      if (doRelink) {
         relinkTo(myLink,myOldFilePath);
function relinkTo(myLink, linkTo) {
      var myFile = new File (linkTo);
      myLink.relink (myFile);
      myLink.update();
Regards, Rasmus

Answer 1

Rasmus,
Ignore my previous post. Here is my way to do this:
var myDoc = app.activeDocument;
var myLinks = myDoc.links
var myStr = prompt ("Substring", '');
if (myStr != null) {
     var myFolder = Folder.selectDialog ("To where");
     var mySubFolder = new Folder (myFolder.fsName + "/" + myStr);
     if (!mySubFolder.exists) mySubFolder.create();
if (myFolder != null) {
     for (i = 0; i < myLinks.length; i++) {
          var myLink = myLinks[i];
          var myFile = new File(myLink.filePath);
          var myNewFile = new File(mySubFolder + "/" + myLink.name);
          myFile.copy(myNewFile);
Kasyan