Print inventory detail (expiration date) on an Item Fulfillment pdf form - script

Hello,

I'm trying to run a script for some reason is not working. I'm following the instructions from SuiteAnswer: ID 49137 - but so far, I'm not getting anything on the form, but also, I'm not getting any errors.

This is the script I have:

http:///**
*@NApiVersion 2.x
*@NScriptType UserEventScript
*/
define(['N/record', 'N/search', 'N/ui/serverWidget'], function (record, search, serverWidget) {
function beforeLoad(scriptContext) {
try {

if (scriptContext.type == 'print') {
var currentRec = scriptContext.newRecord;
var recid = currentRec.id;

columns[0] = search.createColumn({
name: "item",
join: "item",
sort: search.Sort.ASC,
label: "Name"
});

columns[1] = search.createColumn({
name: "itemid",
join: "item",
label: "Internal ID"