Is there an RTC property attribute that contains the list of workitems or changesets that have been accepted into a build definition workspace?

Is there an RTC property attribute that contains the list of workitems or changesets that have been accepted into a build definition workspace?
I am using RTC 6.0.1 and would like to have a list of the work items that were accepted into the build definition workspace and built. I want to send that list from my BUILD.XML file to another process that will automatically changes the state of the work item when the build completes. I could issue SCM commands in the BUILD.XML file to compare the build definition work space with the development stream, but if a property already exists, I would like to use it