This node sure as hell was experimental and has its quirks:
Notice how the file path is passed through List.Create node. It has to be a list of file paths. Not a single file path. Also, the Origin input has to be a list, that matches the list of file paths. So if you have one file path on that list, just put one origin on a list {"A1"}. Finally the image names has to be a list also, and it also has to match the other two lists. Again, if its just one name, then you can do what I did.
Cheers!