Is it possible to send a CSV file to an eDocBuilder template using iFrame URL parameters?

It is not possible using the iFrame interface to send a CSV file to a VDP template, but it is possible using this eDocBuilder API method.
http://engine.edocbuilder.com/services/buildDoc.asmx?op=updateVdpInfo
 
More information on the eDocBuilder API can be found at the article below.
https://support.aleyant.com/kb/a377/edocbuilder-web-services-api.aspx