How can I stop a value from changing?

I want to stop a value changing so the stun wont become false during wait. (Without using loops otherwise it crashes the game/makes it really laggy)

--V is a character
--Stunned is a bool value

task.spawn(function()
	v.Stunned.Value = true	
    --v.Stunned.CanChange = false
    wait(stunTime)
    --v.Stunned.CanChange = true
	v.Stunned.Value = false	
end)

Ah, a stunned system. I just struggled with one of this a little while ago. The fix I came up with was not letting the player get stunned if they are already stunned.

if v.Stunned == true then return else
	v.Stunned.Value = true
	task.wait(stunTime)
	v.Stunned.Value = false
end

If this wasn't what you needed sorry, but this is what I did for my system.