my moving road won't convey the ragdoll bodies using ball constraint why it won't move together with the road after they fell out of the car??

Ragdoll system

local CollisionsOn = false
local ogparent = script.Parent
script.Parent = game:GetService("ServerScriptService")

game.Players.PlayerAdded:Connect(function(play)
	play.CharacterAdded:Connect(function(char)
  		char.Humanoid.BreakJointsOnDeath = false
			char.Humanoid.Died:Connect(function()
				if char:FindFirstChild("HumanoidRootPart") then
					for _, v in pairs(char:GetDescendants()) do
						if v:IsA("Motor6D") then
							local a0, a1 = Instance.new("Attachment"), Instance.new("Attachment")
							a0.CFrame = v.C0
							a1.CFrame = v.C1
							a0.Parent = v.Part0
							a1.Parent = v.Part1
							
							v.Part0.CanCollide = CollisionsOn
							v.Part1.CanCollide = CollisionsOn
							
							local b = Instance.new("BallSocketConstraint")
							b.Attachment0 = a0
							b.Attachment1 = a1
							b.Parent = v.Part0
							
							v:Destroy()
						end
	    			end
	   			end
   			char.HumanoidRootPart.CanCollide = false
  		end)
 	end)
end)

Moving Brick System

local TweenService = game:GetService("TweenService")
local part = script.Parent
local model = script.Parent.Parent
local cframelocation = script.Parent.Parent.StopLiner.Position

local Info = TweenInfo.new(
 2, -- Length
 Enum.EasingStyle.Linear, -- Easing Style
 Enum.EasingDirection.InOut, -- Easing Direction
 -1, -- Times repeated
 false, -- Reverse
 0 -- Delay
)
local Goals =
{
		CFrame = CFrame.new(cframelocation);
}
local tween = TweenService:Create(part,Info,Goals)
tween:Play()


local service = game:GetService("RunService")

local lastposition = script.Parent.Position

service.Stepped:Connect(function(_, deltatime)
	local currentposition = script.Parent.Position
	local deltaposition = currentposition - lastposition
	
	local velocity = deltaposition / deltatime
	
	script.Parent.AssemblyLinearVelocity = velocity
	
	lastposition = currentposition
end)

why runservice won't move the ragdoll body anyway?

Anonymous