Adam, THANKS!! This is exactly what I need.
Also in my site I had to remove all the double quotation mark from the parameters for the add-in to work. I am not sure if it’s because I have a different version of WordPress? But anyway it works fine. I had a paid plug-in with similar function that crash my site and this Mmm Simple File List plug-in is simple, pure, and most importantly, super flexible. Love it.
Karen thanks for the tip! I managed to figure out last night, one other plug in had conflict with the version PHP I used. I had upgraded PHP from 5.4 to 7 and removed the plugin causing trouble which fixed the problem. This seems a common issue that happens to many plugins.
I can close this post now.
Thanks!