Re: How to duplicate the layer and than rename it ?

Layers have a name-property that can be changed via Script.

// 2014, use it at your own risk;

#target photoshop

if (app.documents.length > 0) {

var theDoc = app.activeDocument;

var theLayer = theDoc.activeLayer.duplicate(theDoc.activeLayer, ElementPlacement.PLACEBEFORE);

theLayer.name = "test";

theDoc.activeLayer = theLayer

};