Nifi:how to handle flowfile data updateing and reitreving?

0 down vote favorite I want to reitreve data from folder and then update it and put it back to its' destination and i want to make this operation many times , here is my code i try to getfile and update it , but it doesn't roll back the file and can't reitreve data with the same filename(sometimes

Nifi:how to handle flowfile data updateing and reitreving?

I want to reitreve data from folder and then update it and put it back to its' destination and i want to make this operation many times , here is my code i try to getfile and update it , but it doesn't roll back the file and can't reitreve data with the same filename(sometimes when i start this pro