I'm a writing a proof of concept involving GA Core Reporting API integration and would like to know if it's possible, after creation via:
ga('create', 'UA-XXXXXX-X');
ga('send', 'pageview', {
'dimension1': '[Uid]'
'dimension2': ''
});
... to retrieve a page view by its unique identifier (which could be another dimension, as above) and update another of the dimensions. For example, decisioning data obtained at a later date.