Script to push from Zoho Creator to Zoho Books

Hi,

I am using Zoho Creator 5 to generate invoices which are automatically emailed to customers. I am also using Zoho Books for bookkeeping. I need a script that on the trigger described from Creator, creates an new invoice in Zoho books that I can then match against transactions. My customer list is in both platforms.

- Create and test script
- Allow me to test and suggest amendments if required.
- Modify and test again
-Project complete


Please note, I develop creator apps and write deluge, I just don't know how to write this particular script. I understand the ease of this task to please no overpriced bids. I have a sample but need help applying it;

organizationID = "xxxxxx";
itemList = List();
imap = Map();
imap.put("item_id","XXXXXX");
imap.put("quantity",1);
imap.put("rate",500);
itemList.add(imap);
info itemList;
params = Map();
params.put("customer_id","XXXXX");
params.put("line_items",itemList);
result = zoho.books.createRecord("Invoices", organizationID, params,"zbooks");
info result;

Regards,
Sean