I need to store a rather big number of variables and I tried to do that by storing each variable as Z[n] with varying n. I guess this was not my best idea. The first problem I encountered is when I tried to check whether Z[n] is set. As you can see at the picture if I do this inside a loop it is always true and outside a loop it is the correct value. Why is this happening? I have mathematica 188.8.131.52.
(I had no idea how should I have tagged the question. Feel free to change them.)