Release Object: Release an object that has been picked. This object will no longer behave like Lift & Fall. The picked number will be subtracted by 1.
Picked Number: The number of objected that has been picked by shuttle.
Lift Speed: How fast will the prop travel when it's going up
Height Limit: How high can the prop go up.
When applied for the first time, Lift & Fall is set as a dynamic physics object slider constrained to the world. Its limit is set to the height limit that you set.. You can change its slider constraint target from the constraint panel.