Terrain:FillBlock() refuses to work without any errors

[AIRBORNENicuYT (NickSneaky)]

I’m trying to achieve some Mud Physics which work similar to MudRunner. The very first issue I’m running into is that Terrain:FillBlock() refuses to work and I have no idea why.
If there was a way to detect when a part starts rotating that’d be great too since I doubt it’s because me trying to do this every frame.

rs:BindToRenderStep("MudPhysics", 1, function()
				for i,wheel in wheels do
					if wheel:FindFirstChild("WheelPart") then
						terrain:FillBall(wheel.WheelPart.CFrame, wheel.WheelPart.Size / 2, Enum.Material.Air)
					end
				end
			end)

As you can see in this picture the car is sitting perfectly fine on the mud, while it’s supposed to dig through it.

[LotsOf_Lapis]

Try to make the fill radius larger, terrain voxels are large so you will need a bigger influence range

[AIRBORNENicuYT (NickSneaky)]

Set it all the way to 100. No effect.

[LotsOf_Lapis]

Could you run print() after “then” on line 3? If the print passes into the output you can at least know your code is identifying the “WheelPart”

[AIRBORNENicuYT (NickSneaky)]

Yup it prints.

[LotsOf_Lapis]

The post title says you are using FillBlock, however your code is using FillBall

If you meant to use FillBall, you need to send a Vector3 as the position and a Number as the radius, otherwise you will get an error

Could this be the issue?

[AIRBORNENicuYT (NickSneaky)]

Oh that’s a error from me. Yeah I use FillBall instead and fixed the arguments it was expecting

terrain:FillBall(wheel.Wheel.WheelPart.CFrame.Position, wheel.Wheel.WheelPart.Size.Y * 2, Enum.Material.Air)

On the first argument it expects a Vector3, I had sent it a CFrame instead. On the second argument it was expecting a number, I had sent it a Vector3 instead too.
It still won’t run! This line is not even executing even though it’s supposed to.

[AIRBORNENicuYT (NickSneaky)]

Nevermind, it suddenly started working after I restarted Studio.
The issue was probably the arguments but I’ll still mark your post as the solution since you tried to help. Thank you.