I don't really understand what you are saying in your message to know what it is you are trying to do, or what it is actually doing. But let me comment on a few things.
1. You say you have different event structures, then later two event structures in your while loop. You don't. You have a single event structure. It happens to have multiple (3) event cases. I don't see any problems there.
2. While trying to run your code, I see you have two different mechanical actions on those boolean switches. i-k is set to "Switch Until Released". When you press, that is one value change, when you release, it bounces back and thats a separate value change. The other is set to "Switch when pressed". It switches and generates a value change event whenever you press down on the button. When releasing, that does not switch the button and does not generate a value change event.
3. I don't think either of these buttons look like, or actually have the mechanical properties for the type of button you want. It seems you want a button that when you press it (actually release it is the more typical windows behavior), it does something one time, then snaps back up on its own. And that button should look like a button and not a slide switch which implies a change and leave behavior. You really should have a button that looks like the OK button on the palettes. And be sure that its mechanical action is set to "Latch When Released". That will fire an event when you press down and let up (gives you the ability to slide the mouse off the button in the event you made a mistake), and then will pop back up on its own as soon as LabVIEW reads the value of the button from the terminal.
