Deluge and Books with line items

Hi.

I am trying to code a solution that looks at invoice line item in a workflow and if they contain certain products updates CRM module.

I have been slowly trying to learn deluge but am stuck.

I have managed to grab the invoice data and can pullout various elements as I need them but line items is only ever giving me the first item. Even when I created a loop. Have I missed something or more likely I am going at it the wrong way.

I would love a point in the correct direction please.

invoiceId = invoice.get("invoice_id");
organizationId = organization.get("organization_id");
invoiceRecord = zoho.books.getRecordsByID("invoices",organizationId,invoiceId,"zohobooks").get("invoice");
customerId = invoiceRecord.get("customer_id");
dateIn = invoiceRecord.get("date");
info customerId;
info dateIn;
info invoiceRecord;
lineitem = invoiceRecord.toJSONlist();
for each product_json in lineitem
{
itemmap = lineitem.toMap();
name = itemmap.get("line_items").getJson("name");
//name2 = name.get(product_json);
}
info name;
info product_json;