Block Seat for a specific amount of seconds?

I want to make people sit on a chair for 4 or 5 seconds. I think it doesn't work and it seems like it doesn't work! Can someone tell me more, where to place it or like that. I put the localscript in the seat. Here is what I got:

if hit.Parent then
local jumpDisabled = true

ContextActionService:BindActionAtPriority("JumpOverride", function()
	if jumpDisabled then
		return Enum.ContextActionResult.Sink
	else
		return Enum.ContextActionResult.Pass
	end
	end, false, Enum.ContextActionPriority.High, Enum.PlayerActions.CharacterJump, Enum.KeyCode.Space)
	
	wait (4)
	
	local jumpDisabled = false

	ContextActionService:BindActionAtPriority("JumpOverride", function()
		if jumpDisabled then
			return Enum.ContextActionResult.Sink
		else
			return Enum.ContextActionResult.Pass
		end
	end, false, Enum.ContextActionPriority.High, Enum.PlayerActions.CharacterJump, Enum.KeyCode.Space)

You can do that by simple disabling the Players JumpPower. Use the Seat Occupant to get the Humanoid.

script.Parent.Seat.Changed:Connect(function() --This fires the script whenever something on the seat changed

local Humanoid = script.Parent.Occupant 

if Humanoid then --Makes sure to only fire when there is a Humanoid

Humanoid.JumpPower = 0 --Sets the JumpPower to 0 so they can't leave the seat.

wait(4) --How long you want the player to stay in the seat

Humanoid.JumpPower = 16 --Allows the player to leave the seat
Humanoid.Jump = true --This will force the player to jump

I didn't test the script in studio but it should work.