STEP 13: Now let's make our program create different sized rocks each time the interval event runs.
- Click on . Drag out Set Height and drop it INSIDE your interval event.
- Change the name in front to top_rock. Change the number inside the command to the variable top_height.
Remember that the variable top_height is a randomly generated number, created each time the interval event runs. Now, when we run the program, we'll see rocks that are different sizes!