How to disconnect a changed event?

[RocketSlither (Dev)]

I’m trying to disconnect a changed event but I can’t get it to work.

Code:

script.Parent.Moving.Changed:Connect(function(Model)
	if Check then
		Check:Disconnect()
	end
	if Model ~= nil then
		Check = function()
			local dragDetector = Model["DragDetector"]
			local movablePart = Model:FindFirstChild("HitBox")

			local startPartPosition = nil

			dragDetector.DragStart:Connect(function(player)
				print("ok")
				startPartPosition = movablePart.Position
			end)

			dragDetector.DragEnd:Connect(function(player)
				startPartPosition = nil
			end)

			dragDetector:AddConstraintFunction(2, function(proposedMotion) 
				return constraintExampleUtils.roundToWorldGrid(proposedMotion, startPartPosition)
			end)

			dragDetector.DragContinue:Connect(function()
				local Bad = {}
				for _, Touching in pairs(movablePart:GetTouchingParts()) do
					if Touching.Name == "HitBox" then
						table.insert(Bad,Touching)
					end
				end
				if #Bad > 0 then
					movablePart:FindFirstChildWhichIsA("Texture").Color3 = Color3.new(255,0,0)
				else
					movablePart:FindFirstChildWhichIsA("Texture").Color3 = Color3.new(0,255,0)
				end
			end)
		end
	end
end)

[RocketSlither (Dev)]

Fixed! if you have a better please tell me.

Code:

local constraintExampleUtils = require(game.ReplicatedStorage.Library.Modules.ConstraintExampleUtils)
local Check1
local Check2
local Check3
local Check4
local going = false

local startPartPosition = nil


script.Parent.Moving.Changed:Connect(function(Model)
	if Check1 then
		Check1:Disconnect()
		Check2:Disconnect()
		Check3:Disconnect()
		Check4:Disconnect()
	end
	if Model ~= nil then
		local dragDetector = Model["DragDetector"]
		local movablePart = Model:FindFirstChild("HitBox")

		Check1 = dragDetector.DragStart:Connect(function(player)
			print("ok")
			startPartPosition = movablePart.Position
		end)

		Check2 = dragDetector.DragEnd:Connect(function(player)
			startPartPosition = nil
		end)

		Check3 = dragDetector:AddConstraintFunction(2, function(proposedMotion) 
			return constraintExampleUtils.roundToWorldGrid(proposedMotion, startPartPosition)
		end)

		Check4 = dragDetector.DragContinue:Connect(function()
			local Bad = {}
			for _, Touching in pairs(movablePart:GetTouchingParts()) do
				if Touching.Name == "HitBox" then
					table.insert(Bad,Touching)
				end
			end
			if #Bad > 0 then
				movablePart:FindFirstChildWhichIsA("Texture").Color3 = Color3.new(255,0,0)
			else
				movablePart:FindFirstChildWhichIsA("Texture").Color3 = Color3.new(0,255,0)
			end
		end)
	end
end)