Hi, I am using the ListS3 process in NIFI. But I found out it doesn't accept input. Does that mean I have to use static Prefix? I couldn't find a way to pass upstream flowfile attribute into ListS3 to be used as Prefix. I was thinking about modify the source code and create a new custom process to do List with variables from upstream flowfile, but the code is too hard for me to understand. Is anyone know an easy way to do it? Thanks very much ... View more