is there a capability or function in BI server to manually run a transformation that would act on the results of the report?

like for example you would retrieve records that are tagged as 'NEW' using a pentaho report designer file deployed on the server. After being provided of results, I would like to act on those 'NEW' records and do some processing with them then tag them as 'OLD' using a transformation through a button.

is this possible? someone told me of xactions but i have the faintest idea about it.