Hi
@annacjy,
you can store your file in the files library.
This discussion about reading and writing files might be useful for you.
I do not see your example code. Nevertheless, I think you should start trying implementing the code yourselves. Do it by small steps and check each of them, (for example using the `alert` function). In case of some problems, you can search discussion for a solution and if it does not help, ask again.