Product script to add a discount present under a product in line item

Hi,

I have a script which will add a discount present under a product in the line item on selecting the product,the discount is coming from the profile attribute value@@:

function Cfg_ChildItemChanged (ChangedItem)

{

var nCnt = ChangedItem.GetChildCount();

var x;

var item;

var item_name;

var new_val;

for ( var i = 0; i<nCnt; i++) {

item = ChangedItem.GetChild(i);

item_name= item.GetProperty("ObjName");

new_val = item.GetProperty("NewQty");

var Descuento = TheApplication().GetProfileAttr(item_name);

if (Descuento!= "" && new_val==1){

var str = "$.[DQS Movil_2]#1.[R1]#["+item_name+"]";

AddItem(str, "Rel_a", Descuento, "1");

Below line as per my understanding is saving the path of the product in str: