How to attach an accessory to a NPC?

I made this to search for a way to attach accessories but it does not work, the accessory just falls to the ground.

for i,v in pairs(game.ReplicatedStorage.Hats:GetChildren()) do
        print(v.Name)
        local h = c:FindFirstChildOfClass("Accessory")
        if h then h:Destroy() end
        local hc = v:Clone()
        local att = hc.Handle:FindFirstChildOfClass("Attachment")



        att.Position = c.Head.Position 
        hc.AttachmentPos = c.Head.Position
        hc.AttachmentPoint = c.Head.CFrame
        hc.Parent = c
        c.Humanoid:AddAccessory(hc)
        wait(3)
    end

I know there are similar questions, but none of them solve my issue or provide an insightful answer.