Get Customer Notea

Hi

Is it possible to retrieve Customer notes? I'm currently designing an application that will integrate with KashFlow and have been playing with the Web Services API. One thing I can't seem to retrieve is customer notes. I have entered some test notes though the GUI and then tested calling

GetCustomerByID

it always to return null for Notes, see extract below

<Postcode>N31 9FD</Postcode>
<Website/>
<EC>0</EC>
<OutsideEC>0</OutsideEC>
<Notes/>
<Source>123456</Source>

My question is how do I access and update customer notes from the API

Thanks

Rob