Variable Cannot Be Assigned To?

I feel like this is easy but I can't get it. Output: 16:22:42.022 - Value cannot be assigned to 16:22:42.023 - Script 'Workspace.Cyan.Portal', Line 22 16:22:42.025 - Stack End

bullet = script.Parent
name = bullet.Name

bullet.Touched:connect(function(hit)
    if hit.Parent.ClassName ~= "Tool" then
        bullet:Destroy()
        if hit.Name == "WhiteWall" then
            if name == "Cyan" then
                for _,v in pairs(workspace.Walls:GetChildren()) do
                    if v:FindFirstChild("CyanPortal") then
                        v.CyanPortal:Destroy()
                        v.CanTeleport.Value = false
                        v.Color.Value = "White"
                    end
                end
                wait()
                local decal = Instance.new("Decal",hit)
                decal.Texture = "http://www.roblox.com/asset/?id=189212648"
                decal.Face = "Front"
                decal.Name = "CyanPortal"
                hit.CanTeleport.Value = true
                hit.Color.Value = "Cyan"
            elseif name == "Orange" then
                for _,v in pairs(workspace.Walls:GetChildren()) do
                    if v:FindFirstChild("OrangePortal") then
                        v.OrangePortal:Destroy()
                        v.CanTeleport.Value = false
                        v.Color.Value = "White"
                    end
                end
                wait()
                local decal = Instance.new("Decal",hit)
                decal.Texture = "http://www.roblox.com/asset/?id=189212620"
                decal.Face = "Front"
                decal.Name = "OrangePortal"
                hit.CanTeleport.Value = true
                hit.Color.Value = "Orange"
            end
        end
    end
end)