Potentially a very easy to answer question, how do I configure the input of my macro to read files from a directory? Currently my directory has 2 files:

In the below image, in red section, I previously had one of the files set as the 'File Input' and the macro worked as expected. But I don't know how to set it up so it will read one file at a time from my directory.

When I try and use a directory with the Macro, none of the variables are recognised.
Many thanks