Humanoid is not a valid member of Backpack?

Im trying to make an animation end when the player unequips the tool. Heres the script:

function Unequipped()
	local IdleAnim = script.Parent.Parent.Humanoid:LoadAnimation(script.Parent.IdleAnim)
	if script.Parent.IdleAnim then script.Parent.IdleAnim:Stop() end
end

I already know the reason, but how do i fix this?

Edit: Here's the edited script

function Unequipped()
	local IdleAnim = script.Parent.Parent.Parent.Character.Humanoid:LoadAnimation(script.Parent.IdleAnim)
	IdleAnim:Stop()
end

I have done what DepressionSensei has said, but it still doesnt work. The animation still doesnt stop. Heres the video to demonstrate: https://www.youtube.com/watch?v=h2ZfLWEWG9Q&feature=youtu.be

script.Parent.Parent.Parent.Character.Humanoid I already know you know this, but if you really understood, you probably would've been able to fix this already. When a player unequips a tool, it leaves from the character's children and moves to the player's backpack. If you're getting an error that the Humanoid isn't a valid member of the backpack, that's why. The parent of the character is the player, so you can jump back to one more parent, the player, and index the character to fix your script.

Hope this helped, remember to accept if it did :)