pretty simple

[smercurio_fc]

If this isn't what you want then I give up.

[altenbach]

Here's a quick modification (LV8.0), eliminating the event structure (we don't really need it) and matching the show/hide selector to the graph legend for a cleaner and more intuitive UI.

[danilorj]

The case structure with 33,34,...40 needs to stay. It's important for the program.

[smercurio_fc]

Well, that makes no sense, as you have not explained what you're trying to do, and these seemingly arbitrary requirements make it difficult to understand what you're trying to accomplish and to be able to indicate how you should write simpler and more efficient code. Regardless, whatever it is that you're doing, we're surely not going to write the entire program for you. As I indicated before, just use a simple Add primitive to add 33 to the iteration count, instead of that formula node. It's quite trivial.