Playing animation in reverse not working at all

Help and Feedback Scripting Support
,
#1

Hello! I have been spending quite a bit of time trying to figure this out and nothing is seeming to work in the way I want it to. What I want to achieve is to play an animation backwards/in reverse. I’ve read a bunch of devforum posts on this and they all say use AdjustSpeed(-1) but it is seemingly not working at all. https://i.imgur.com/j4Y98v0.gif

the code is:

local plr=game.Players.LocalPlayer
local char=plr.Character
local Humanoid=char:WaitForChild("Humanoid")
local CrouchAnim=Humanoid.Animator:LoadAnimation(game.ReplicatedStorage.Crouch)
local CDB=false
local IC=false

local function Crouch(input, gameProcessedEvent)
	if gameProcessedEvent then return end
	if Humanoid.MoveDirection.Magnitude==0 and CDB==false and IC==false and input.KeyCode==Enum.KeyCode.C then
		IC=not IC
		CDB=true
		CrouchAnim:Play()
		CrouchAnim.KeyframeReached:Connect(function()
			CrouchAnim:AdjustSpeed(0)
		end)
		wait(1)
		CDB=false
	elseif IC==true and CDB==false and input.KeyCode==Enum.KeyCode.C then
		IC=not IC
		CrouchAnim:Play()
		CrouchAnim:AdjustSpeed(-1)
	end
end

UIS.InputBegan:Connect(Crouch)

pls help if you have any idea on why this isn’t working, it may also be worth noting that this method of AdjustSpeed(-1) never worked for me, ever