Creating an assembly build from a workorder using suitescript

I am new at this. I am trying to create an assembly build from an existing work order.

but every time I try it says you can not set items for the build
this is my script so far . does anyone have an idea why assemblyBuild.setSublistValue is not working

/**
* @NApiVersion 2.x
* @NScriptType Suitelet
*/

define([‘N/record’, ‘N/log’], function (record, log) {
function createAssemblyBuild(workOrderId, buildQuantity, itemsInfo) {
var workOrderRecord = record.load({
type: record.Type.WORK_ORDER,
id: workOrderId
});

var assemblyBuild = record.create({
type: record.Type.ASSEMBLY_BUILD
});

assemblyBuild.setValue({
fieldId: ‘assemblyitem’,
value: workOrderRecord.getValue(‘assemblyitem’)
});

assemblyBuild.setValue({
fieldId: ‘location’,
value: workOrderRecord.getValue(‘location’)
});

assemblyBuild.setValue({
fieldId: ‘quantity’,
value: buildQuantity
});

assemblyBuild.setValue({
fieldId: ‘workorder’,
value: workOrderId
});

var componentsSublistId = ‘component’;
itemsInfo.forEach(function (itemInfo) {
var itemIndex = assemblyBuild.findSublistLineWithValue({
sublistId: componentsSublistId,
fieldId: ‘item’,
value: itemInfo.itemId
});

if (itemIndex !== -1) {
assemblyBuild.setSublistValue({
sublistId: componentsSublistId,
fieldId: ‘quantity’,
line: itemIndex,
value: itemInfo.itemQuantity
});

// Find the bin number from the original work order
var woItemIndex = workOrderRecord.findSublistLineWithValue({
sublistId: ‘item’,
fieldId: ‘item’,
value: itemInfo.itemId
});

if (woItemIndex !== -1) {
var binNumber = workOrderRecord.getSublistValue({
sublistId: ‘item’,
fieldId: ‘binnumber’,
line: woItemIndex
});

// Create an inventory detail record for the item
var inventoryDetail = record.create({
type: record.Type.INVENTORY_DETAIL
});

// Consume serial numbers with the provided quantity
itemInfo.serialNumbers.forEach(function (serialNumberInfo) {
inventoryDetail.selectNewLine({
sublistId: ‘inventoryassignment’
});

inventoryDetail.setCurrentSublistValue({
sublistId: ‘inventoryassignment’,
fieldId: ‘issueinventorynumber’,
value: serialNumberInfo.serialNumber
});

inventoryDetail.setCurrentSublistValue({
sublistId: ‘inventoryassignment’,
fieldId: ‘binnumber’,
value: binNumber
});

inventoryDetail.setCurrentSublistValue({
sublistId: ‘inventoryassignment’,
fieldId: ‘quantity’,
value: serialNumberInfo.quantity
});

inventoryDetail.commitLine({
sublistId: ‘inventoryassignment’
});
});

// Set the inventory detail on the assembly build component
var inventoryDetailId = inventoryDetail.save();
assemblyBuild.setSublistValue({
sublistId: componentsSublistId,
fieldId: ‘inventorydetail’,
line: itemIndex,
value: inventoryDetailId
});
}
}
});

var buildId = assemblyBuild.save();
return buildId;
}

function onRequest(context) {
if (context.request.method === ‘POST’) {
var requestBody = JSON.parse(context.request.body);

try {
var buildId = createAssemblyBuild(
requestBody.workOrderId,
requestBody.buildQuantity,
requestBody.itemsInfo
);

context.response.write({
output: ‘Assembly build record created successfully with ID:’ + buildId
});
} catch (error) {
log.error(‘Error’, error.message);
context.response.write({ output: ‘Error:’ + error.message });
}
} else {
context.response.write({ output: ‘This Suitelet only accepts POST requests.’ });
}
}

return {
onRequest: onRequest
};
});