Modify BOM 2.0

/**
 *@NApiVersion 2.x
 *@NScriptType Suitelet
 */
define( [ 'N/ui/serverWidget', 'N/email', 'N/runtime', 'N/search' ],
	function( ui, email, runtime, search ) {
		function onRequest( context ) {
			if ( context.request.method === 'GET' ) {
				var form = ui.createForm( {
					title: 'Mass Update Bill of Materials'
				} );
				var item_search = form.addField( {
					id    : 'item_search',
					type  : ui.FieldType.SELECT,
					label : 'Select Item to Search For',
					source: 'item'
				} );

				form.addSubmitButton( {
					label: 'Search'
				} );
				context.response.writePage( form );
			} else {
				var request = context.request;

				var form = ui.createForm( {
					title: 'Mass Update Bill of Materials'
				} );




				var searchItem = form.addField( {
					id    : 'custpage_item_search',
					type  : ui.FieldType.SELECT,
					label : 'Select Item to Search For',
					source: 'item'
				} );


//***************************************************************************************************************************************
				var itemid = request.parameters.item_search;

				var message = 'Select Item to Replace the Chosen Item (' + itemid + ') in the selected BOMs';
				form.addField( 'custpage_item_search','select', message, 'item' );
				var replacementItemId = 5803; //A24-0101// where xxxx is the id of the item you want to replace the component with
				var itemIdToReplace   = 5805; //D12-0101// where xxxx is the id of the assembly component you want to replace


				var itemSearch = search.create( {
					type: search.Type.ITEM,

					filters: []
				} );
				//itemSearch.save();
				var result = itemSearch.run();


				result.each(function(resultItem) {
					var foo = resultItem;
					foo = foo;
				});


				_.each(result, function(item,index,list) {
					var foo = item;
					foo = foo;
				});







				var filters = [new nlobjSearchFilter('internalid','memberitem','is', itemIdToReplace)] //filter the search by the item you want to replace
				var columns = [];
				var result = resultSet( 'item','customsearch_assembly_item_search', filters, columns );
				var result = nlapiSearchRecord('item','customsearch_assembly_item_search',filters,null); //where xxxx is th e saved search id (ex. customsearch_assembly_components)
				var checkboxOptions = {
					id:''
					, type:'serverWidget.FieldType.CHECKBOX'
					, label:''
				}
				// result.forEach(function(item, index,list) {
				// 	var checkbox = "<input type='checkbox' value='"+item.id+"' >" + item.id + "</input><br />"
				// 	response.write(checkbox)
				// });
				// var foo = this;
				// var assemId = result[0].getId(); //gets the assembly item id
				// var lineId  = result[0].getValue('memberline'); //gets the sublist line index
				// var record = nlapiLoadRecord('assemblyitem', assemId); //load assembly item record
				//
				// record.setLineItemValue('member','item', lineId, replacementItemId);
				// nlapiSubmitRecord(record);

//**********************************************************************************************************************************************************







				form.addSubmitButton( {
					label: 'Search'
				} );
				context.response.writePage( form );
			}
		}

		return {
			onRequest: onRequest
		};
	} );