NavMeshAgent not working on character with a smaller size than original

So basically I have a nav mesh agent on a character in 3D and this character is huge. Now what I had to do is lower its size but whenever I do so the nav mesh agent is not working anymore, specifically its pathing. It only works on original size. How would one fix that issue? I tried changing the nav mesh agent size and radius but the radius and size always stay the same no matter how much I change it the green cylinder is always the same on the character. My second character works fine but he is also in its original size. Any ideas?