Changes to a layer Ph cs4 js

Question

Hi, I need to make several changes to a layer, but none of them are working. Here what I have:
doc = app.activeDocument;
var myLayer = doc.activeLayer;   // I need to specify the layer
or
var myLayer = doc.layers.itemByName("Vector Smart Object");     // I need to specify the layer
myLayer.insertLabel ("INSTRUCTIONS (TURN OFF)");     // I need to rename the layer
myLayer.move (LocationOptions.AT_BEGINNING);      // I need to move the layer to the very bottom
myLayer.printable = false;     //  I need to set the layer not to print if possible
myLayer.locked = true;      //  I need to lock the layer
Your help is highly appreciated.
Yulia

Answer 1

It seems you are again trying to use improper terminology.
Photoshop’s Document Object Model is different from Illustrator’s and Indesign’s!
In ESTK consult Help – Object Model Viewer to see what the items and operations are called.
As for the matter at hand:
You could either create a Solid Color Layer (using ScriptingListener-code for example) with the intended values, or fill the artLayer.
var myWhiteLayer = doc.artLayers.add();
myWhiteLayer.name =  "WHITE LAYER";
var myWhite = new CMYKColor ();
myWhite.cyan = 0.0;
myWhite.magenta = 0.0;
myWhite.yellow = 0.0;
myWhite.black =0.0;
doc.selection.selectAll();
doc.selection.fill(myWhite);
doc.selection.deselect();