Another way is to just add two scene components to the ladder, one at the top, and the other at the bottom, and when you want to see how tall the ladder is, just get the difference in the distance between the two scene components.
Another way is to just add two scene components to the ladder, one at the top, and the other at the bottom, and when you want to see how tall the ladder is, just get the difference in the distance between the two scene components.