I’m trying to get my otter to move it’s location but it’s not moving because the terrain has a slope.

This is my code, it’s fairly simple. I plan to create random points in the terrain and get my otter to move randomly, thus, hardcoding the specific position will not help.
local otterModel = script.Parent
local myHuman = script.Parent:WaitForChild("Humanoid")
wait(10)
myHuman:MoveTo(Vector3.new(-21.705, -110.127, -48.7))