Why isn't this digging tool working with Filtering Enabled?

This digging tool digs out a small area of the terrain your mouse is on when you hold down the left mouse button.

With Filtering Enabled on, I have noticed that what the player digs out, is only visible to one player; the player who dug the terrain.

I can't seem to get it to work, no matter what I try.

The coding is this:

wait(1)
enabled = true
Tool = script.Parent
down = false -- Mouse isn't down
gui = script.LoadBar:clone() -- Displays your process in digging

-- auto-wedge fcn:
--sets cell x, y, z to default material if parameter is provided, if not sets cell x, y, z to be whatever material it previously was
--returns true if made a wedge, false if the cell remains a block
function MakeWedge(x, y, z, defaultmaterial)
	local c = game.Workspace.Terrain
	--gather info about all the cells around x, y, z
	surroundings = {} --surroundings is a 3 x 3 x 3 array of the material of the cells adjacent to x, y, z
	for i = x - 1, x + 1 do
		surroundings[i] = {}
		for j = y - 1, y + 1 do
			surroundings[i][j] = {}
			for k = z - 1, z + 1 do
				local material, wedge, rotation = c:GetCell(i, j, k)
				surroundings[i][j][k] = material.Value
			end
		end
	end
	--make some useful arrays and counters
	local sides = {} --sides is an array of the material of the 4 adjacent sides
	sides[0] = surroundings[x - 1][y][z]
	sides[1] = surroundings[x][y][z + 1]
	sides[2] = surroundings[x + 1][y][z]
	sides[3] = surroundings[x][y][z - 1]
	local adjacentSides = 0
	for n = 0, 3 do
		if sides[n] > 0 then
			adjacentSides = adjacentSides + 1
		end
	end
	local sidesAbove = {} --sides is an array of the material of the 4 adjacent sides 1 height above
	sidesAbove[0] = surroundings[x - 1][y + 1][z]
	sidesAbove[1] = surroundings[x][y + 1][z + 1]
	sidesAbove[2] = surroundings[x + 1][y + 1][z]
	sidesAbove[3] = surroundings[x][y + 1][z - 1]
	local adjacentSidesAbove = 0
	for n = 0, 3 do
		if sidesAbove[n] > 0 then
			adjacentSidesAbove = adjacentSidesAbove + 1
		end
	end
	local corners = {} --corners is an array of the material of the 4 adjacent corners
	corners[0] = surroundings[x - 1][y][z - 1]
	corners[1] = surroundings[x - 1][y][z + 1]
	corners[2] = surroundings[x + 1][y][z + 1]
	corners[3] = surroundings[x + 1][y][z - 1]
	local adjacentCorners = 0
	for n = 0, 3 do
		if corners[n] > 0 then
			adjacentCorners = adjacentCorners + 1
		end
	end
	local cornersAbove = {} --corners is an array of the material of the 4 adjacent corners 1 height above
	cornersAbove[0] = surroundings[x - 1][y + 1][z - 1]
	cornersAbove[1] = surroundings[x - 1][y + 1][z + 1]
	cornersAbove[2] = surroundings[x + 1][y + 1][z + 1]
	cornersAbove[3] = surroundings[x + 1][y + 1][z - 1]
	local adjacentCornersAbove = 0
	for n = 0, 3 do
		if cornersAbove[n] > 0 then
			adjacentCornersAbove = adjacentCornersAbove + 1
		end
	end
	--determine what type of wedge to make
	local material = nil
	local wedge = nil
	local rotation = nil 
	if defaultmaterial then
		material = defaultmaterial
	else
		material, wedge, rotation = c:GetCell(x, y, z) --start with the existing material, wedge, and rotation
	end
	wedge = 0 --default wedge is a block
	rotation = 0 --default rotation is 0
	--type 1: 45 degree ramp //must not have a block on top and must have a block under, and be surrounded by 1 side; or 3 sides and the 2 corners between them
	if surroundings[x][y + 1][z] == 0 and surroundings[x][y - 1][z] > 0 then
		if adjacentSides == 1 then
			for n = 0, 3 do
				if sides[n] > 0 then
					wedge = 1
					rotation = (n + 1) % 4
					c:SetCell(x, y, z, material, wedge, rotation)
					return true
				end
			end
		elseif  adjacentSides == 3 then
			for n = 0, 3 do
				if sides[n] > 0 and corners[(n + 1) % 4] > 0 and sides[(n + 1) % 4] > 0 and corners[(n + 2) % 4] > 0 and sides[(n + 2) % 4] > 0 then
					wedge = 1
					rotation = (n + 2) % 4
					c:SetCell(x, y, z, material, wedge, rotation)
					return true
				end
			end
		end
	end
	--type 2: 45 degree corner //must not have a block on top and must have a block under, and be surrounded by 2 sides and the 1 corner between them; or 3 sides and 1 corner between 2 of them (facing towards that corner)
	if surroundings[x][y + 1][z] == 0 and surroundings[x][y - 1][z] > 0 then
		for n = 0, 3 do
			if sides[n] > 0 and corners[(n + 1) % 4] > 0 and sides[(n + 1) % 4] > 0 and (adjacentSides == 2 or (adjacentSides == 3 and (corners[(n + 3) % 4] > 0 or (sides[(n + 2) % 4] > 0 and corners[(n + 2) % 4] > 0) or (sides[(n + 3) % 4] > 0 and corners[n] > 0)))) then
				wedge = 2
				rotation = (n + 2) % 4
				c:SetCell(x, y, z, material, wedge, rotation)
				return true
			end
		end
	end
	--type 3: 45 degree inverse corner //surrounded by three sides or 4 sides and 3 corners, with nothing above or else a block on top surrounded on 2 sides and the corner between them
	if adjacentSides == 3 and surroundings[x][y + 1][z] > 0 then
		if adjacentCorners > 1 then
			for n = 0, 3 do
				if (corners[n] == 0 or cornersAbove[n] == 0) and (sides[(n - 1) % 4] == 0 or sides[n] == 0) and (sidesAbove[n] == 0 and sidesAbove[(n + 1) % 4] > 0 and sidesAbove[(n + 2) % 4] > 0 and sidesAbove[(n + 3) % 4] == 0) then 
					wedge = 3
					rotation = (n + 3) % 4
					c:SetCell(x, y, z, material, wedge, rotation)
					return true
				end
			end
		end
	elseif adjacentSides == 4 and adjacentCorners == 3 then
		for n = 0, 3 do
			if corners[n] == 0 and (surroundings[x][y + 1][z] == 0 or (sidesAbove[n] == 0 and sidesAbove[(n + 1) % 4] > 0 and cornersAbove[(n + 2) % 4] > 0 and sidesAbove[(n + 2) % 4] > 0 and sidesAbove[(n + 3) % 4] == 0)) then
				wedge = 3
				rotation = (n + 3) % 4
				c:SetCell(x, y, z, material, wedge, rotation)
				return true
			end
		end
	end
	--type 4: half a cube, as if it were cut diagonally from front to back //surrounded by 2 sides
	if adjacentSides == 2 and adjacentCorners < 4 then
		for n = 0, 3 do
			if sides[n] == 0 and sides[(n + 1) % 4] == 0 and (surroundings[x][y + 1][z] == 0 or (sidesAbove[n] == 0 and sidesAbove[(n + 1) % 4] == 0 and sidesAbove[(n + 2) % 4] > 0 and sidesAbove[(n + 3) % 4] > 0)) then
				wedge = 4
				rotation = n
				c:SetCell(x, y, z, material, wedge, rotation)
				return true
			end
		end
	end
	c:SetCell(x, y, z, material, wedge, rotation)
	return false
end

function updateMouseRadius(mouse) -- Makes sure that while the player is digging he doesn't go move his mouse somewhere else going outside our magnitude
p = game.Players.LocalPlayer
if (mouse.Hit.p - p.Character.Torso.Position).magnitude > 20 then -- YOU RULE BREAKER!!!
onDeselect() -- Acts as if they stopped holding the mouse down
end
end



function onClick(mouse)
	h = game.Players.LocalPlayer.Character.Humanoid
	if not enabled or down or h == nil then
		return
	end
		p = game.Players.LocalPlayer
		if (p == nil) then return end
		if (p.Character == nil) then return end
		if (mouse.Hit.p - p.Character.Torso.Position).magnitude > 20 then return end
		down = true
		enabled = false
		c = game.Workspace.Terrain
		while down do
			Tool.Dirt.Smoke.Enabled = true
			if not p.PlayerGui:findFirstChild("LoadBar") then
				local l = gui:clone()
				l.Parent = p.PlayerGui
				script.Parent.guiObject.Value = l
			end
			local guivalue = p.PlayerGui:findFirstChild("LoadBar").Frame.LoadBarPercentage
			updateMouseRadius(mouse) -- Checks radius
			guivalue.Value = guivalue.Value + 3
			if guivalue.Value >= 100 then
				local cellPos = c:WorldToCellPreferSolid(Vector3.new(mouse.Hit.x, mouse.Hit.y, mouse.Hit.z))
				local x = cellPos.x
				local y = cellPos.y
				local z = cellPos.z		
				c:SetCell(x, y, z, 0, 0, 0)
				for i = x - 1, x + 1 do
					for j = y - 1, y + 1 do
						for k = z - 1, z + 1 do
							MakeWedge(i, j, k)
						end
					end
				end
				Tool.Dirt.Smoke.Enabled = false
				onDeselect(mouse) -- Kills GUI
				enabled = false
				mouse.Icon = "rbxasset://textures\\GunWaitCursor.png"
				wait(0.5)
				mouse.Icon = "rbxasset://textures\\GunCursor.png"
				enabled = true
			end
		wait()
		end
end

function onClickOff(mouse)
Tool.Dirt.Smoke.Enabled = false
enabled = true
down = false
	if script.Parent.guiObject.Value ~= nil then
		script.Parent.guiObject.Value:remove()
	end
	if Tool.DiggyDiggyHole.Value ~= nil then
		Tool.DiggyDiggyHole.Value:Stop()
		Tool.DiggyDiggyHole.Value:remove()
	end
	Tool.GripForward = Vector3.new(0,0,-1)
	Tool.GripRight = Vector3.new(0,0,0)
	Tool.GripUp = Vector3.new(0, 1, 0)
	Tool.Animate.Disabled = true -- The script seems to crash after digging due to the animation becoming nil. Just restart it.
	Tool.Animate.Disabled = false
end

function onDeselect(mouse)
Tool.Dirt.Smoke.Enabled = false
enabled = true
down = false
	if script.Parent.guiObject.Value ~= nil then
		script.Parent.guiObject.Value:remove()
	end
	if Tool.DiggyDiggyHole.Value ~= nil then
		Tool.DiggyDiggyHole.Value:Stop()
		Tool.DiggyDiggyHole.Value:remove()
	end
	Tool.GripForward = Vector3.new(0,0,-1)
	Tool.GripRight = Vector3.new(0,0,0)
	Tool.GripUp = Vector3.new(0, 1, 0)
	Tool.Animate.Disabled = true -- The script seems to crash after digging due to the animation becoming nil. Just restart it.
	Tool.Animate.Disabled = false
end

function onSelect(mouse)
		mouse.Icon = "rbxasset://textures\\GunCursor.png"
		mouse.Button1Down:connect(function () onClick(mouse) end)
		mouse.Button1Up:connect(function () onClickOff(mouse) end)
end



script.Parent.Equipped:connect(onSelect)
script.Parent.UnEquipped:connect(onDeselect)

Any help is greatly appreciated!

LocalScripts on FilteringEnabled will only affect the player, and not the game server. To fix this, you might want to look at this guide to FilteringEnabled.

(The Remote Functions and Remote Events helpful link is broken in that tutorial, so I put it here for you.)

Sorry to say, but you might have to change lots of what you already have to have FilteringEnabled in your game.