"Read File to list" does exactly what it says.
Result is "LIST variable", not just "variable",
so iy is special variable that holds an aray
of elements or "LIST variable". Each element
in that aray/list is divided by "," by default,
so all you have to do is to "parse" that
"LIST variable". You can do it with list module.
So there is nothing wrong with your example, you
just need to do some addirional in list manipulation
in order to get element or elements you need.