Hi Sharky,
I’m not sure exactly what you have done in your animation, but if you animate on the object level (aka – the container), then the action constraint will need to get that information from the “Object” level. (ie – Object Action).
If you want to connect it to a certain bone control, make sure you create this action in Pose mode.
You will see this in action in the “Rigging a Crane Arm” project at the end of the course.
Also just fyi, the action constraint is pretty much the same thing as SDK in Maya, but in Blender you need to make sure you add this constraint to every bone that you want to be animated.
Hope that makes sense.
