PS CC newbie with layer translate question

Question

I am a newbie in PS. Currently I am using Adobe PS CC, in which I want to merge quite a number of images together to form a "collage". Those images are already named with coordinates, like (0, 1).png with size 1280 x 1280 pixel, and I already load all of them into a PS document by photomerge. I suppose each of them is contained in a independent layer, and I can use free transform to move those layers to my required position such that those images can resemble into a large image like a puzzle. When the number of layers is large, doing this by hand is really a tedious work. So I want to automate it with the script. I have try the following script and run it, but without any response; please correct me as I am new (and also new in JavaScript as well)
# target photoshop
function Main()
     MoveLayerTo = function(l, x, y) {
           var b = l.bounds;
           var x1 = b[0].as("px");
           var y1 = b[1].as("px");
           var x2 = b[2].as("px");
           var y2 = b[3].as("px");
           var xc = x1 + (x2-x1)/2;
           var yc = y1 + (y2-y1)/2;
           l.translate(x-xc, y-yc);
  var i = 0;
  var j = 0;
  for (i = -6; i < 3; i++) {
  for (j = 3; j > -11; j--) {
  MoveLayerTo(app.activeDocument.layers.getByName("(" + i + ", " + j + ").png"), new UnitValue(640 +  (i + 6) * 1280, "px"), new UnitValue(640 + (3 - j) * 1280, "px"))

Answer 1

Photo Collage Toolkit
Photoshop scripting is powerful and I believe this package demonstrates this A video showing a 5 image collage PSD template  being populates with images:
The package includes four simple rules to follow when making Photo Collage Template PSD files so they will be compatible with my Photoshop scripts.
Size the photo collage templates for the print size you want - width, height and print DPI resolution.
Photo collage templates must have a Photoshop background layer. The contents of this layer can be anything.
Photo collage templates must have alpha channels named "Image 1", "Image 2", ... "Image n".
Photo collage templates layers above the background layers must provide transparent areas to let the images that will be placed below them show through.
There are twelve scripts in this package they provide the following functions:
TestCollageTemplate.jsx - Used to test a Photo Collage Template while you are making it with Photoshop.
CollageTemplateBuilder.jsx - Can build Templates compatible with this toolkit's scripts.
LayerToAlphaChan.jsx - Used to convert a Prototype Image Layer stack into a template document.
InteractivePopulateCollage.jsx - Used to interactively populate Any Photo Collage template. Offers most user control inserting pictures and text.
ReplaceCollageImage.jsx - use to replace a populated collage image Smart Object layer with an other image correctly resized and positioned.
ChangeTextSize.jsx - This script can be used to change Image stamps text size when the size used by the populating did not work well.
PopulateCollageTemplate.jsx - Used to Automatically populate a Photo Collage template and leave the populated copy open in Photoshop.
BatchOneImageCollage.jsx - Used to Automatically Batch Populate Collage templates that only have one image inserted. The Collage or Image may be stamped with text.
BatchMultiImageCollage.jsx - Used to Automatically Batch Populate Any Photo Collage template with images in a source image folder. Easier to use than the interactive script. Saved collages can be tweaked.
BatchPicturePackage.jsx - Used to Automatically Batch Populate Any Photo Collage template with an image in a source image folder
PasteImageRoll.jsx - Paste Images into a document to be print on roll paper.
PCTpreferences.jsx - Edit This File to Customize Collage Populating scripts default setting and add your own Layer styles.
Documentation and Examples