It works only with message yes. But if you want to work with file it does not. It works partial. Sometimes it add back string sometimes delete all file. It depends.
Check attached file.
Add C:\zennofiles\test.txt
And in it add:
Name;Surname
Name1;Surname1
Name2;Surname2
P.S
Add in zennoposter to make 10 successful results. If you add one yes it works better. It seems zenno cannot remember exact string for every turn.