Triggered PathNodes

Threefolder made a tutorial about PathNodes, but they are working only automatically for me, so can someone explain me how to make them move using a PathTrigger, just like hPerks made for the Doors of his level, Meet me inside?

Use a PathTrigger -- after renaming the object you want to run on a path, set "object1" to the object's name, and "path1" to the first node in the path you want it to follow.

Thing is... well, I want to make a gem spawn using a simple PathNode system. This gem will spawn when the marble enters the PathTrigger.
I just did what you told me, I've set the object (here, a gem) and its corresponding path.
But the problem is, when I restart the level, the PathNode system doesn't wait for the marble to enter its corresponding PathTrigger, to play automatically every time I press my respawning key to restart the level.

How can I fix this?