In the dblock editor, you have to select what you want visible, and invisible, for each state.
Try toggling the visibility mode button. (highlighted).
The example shown is actually about a half dozen or so arrows all piled up on one another. For each visibility state, only ONE is visible, the rest are set to invisible.
Not sure if this helps, but hopefully it's a start.
(Jonesy - edited thread title for future searches)