Receiving a PO using Suitescript

Hi -

I'm working on a script which will (hopefully) automatically receive a PO if it meets certain conditions.  Is there a way to script the receipt of a PO?

I tried simply setting the 'quantityreceived' to the 'quantity' for each lineitem, but that edit didn't take - I'm guessing that 'quantityreceived' must be a read-only field, right?

Is there any way using SuiteScript to hook into the internal item receipt process, or will I have to generate an itemreceipt record from scratch, and somehow link that to the PO?  Is that even doable?

Thanks!

--Tim