Hi Raj,
I would request you to open a new thread as commenting on the old thread might loose the context of the earlier question.
Now to answer your question, out of box notes is not an attribute which is under project object. If you look prj_projects_write.xml then you will see its referring to a name space " nikuxog_project.xsd"
<NikuDataBus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xsd/nikuxog_project.xsd">
so if you go and open the nikuxog_project.xsd then you will find the list of attributes which are allowed in xog and unfortunately NOTE its not.
Hope this helps.
Regards
Suman Pramanik