Slideloops is not a valid member of Workspace "Workspace"?

if event == 3 then
		print("you got number 3")
		
		for _,Part in pairs(workspace.Slideloops:GetDescendants()) do
			if Part:IsA("Part") then
				coroutine.wrap(function()
					Part.Anchored = false
					for i = 1, 6 do
						Part.Transparency = Part.Transparency -0.25
						wait(0.1)
					end
				end)()
			end
		end
		transrigh.Transparency = 0
		transrigh.CanCollide = true
		wait(10)
		stopping.Transparency = 1
		stopping.CanCollide = false
	end	

Slideloops is located in the workspace, so I'm not sure why it's throwing this error. I have tried changing "for _,Part in pairs(workspace.Slideloops:GetDescendants()) do" to "for _,Part in pairs(script.Parent.Parent.Parent.Parent.Slideloops:GetDescendants()) do", but it still doesn't work.