Loop (For) doesn't break or finish? Need help.

The loop only continues, I tried to break it using System: Stop Loop but its not working.

I only know basic programming, so back then I knew that this "For" loop should break when it reach 3 or 4 but it continue to input numbers.

It is actually breaking during the first loop because of "stop loop"

However, this For Loop is being ran repeatedly because there are no conditions. It's being ran "every tick", which is why it looks like it's never stopping

Thank you!