Hidden object not changing states

I am not sure if this is a bug. I want the object (PlanIcon) to change from its intial state of Hidden to Normal when a motion path animation completes. I also tried to make it toggle from Hidden and that didn't work either. 

When you take a look, please read the blue notes on the screen. I have another question about the best way to make an object move along a road. I'm wanting a car to move along a road and I want to show icons and callout boxes as it moves and stops at 7 different points on the road.

Thanks so much.