Why won't my "Touched" event script work? [SOLVED BY MYSELF]

I wrote this script for a forcefield that changes colour and makes a noise when touched. There is a button that turns it on and off. The transparency bit is therefore needed for this to properly work. Here is the script:

db = false

function hit(part)
	if db then return end
	if script.Parent.Transparency == 0.6 then
		script.Parent.hit:Play()
		script.Parent.BrickColor = BrickColor.new("Institutional white")
		db = true
		wait(0.2)
		script.Parent.BrickColor = BrickColor.new("Bright blue")
		db = false
	else return end
	end


script.Parent.Touched:connect(hit)

However, this does not seem to work and the output tells me nothing. The part IS 0.6 transparency when the field is turned on. Can someone help?

EDIT: I changed the script to include a debounce.

Considering nobody seemed bothered and/or capable enough to answer this properly, I figured I should try and work it out myself. After a long time of editing, I realised the Transparency was somehow the problem. So, I merely changed it to: if script.Parent.Transparency ~= 1 then That seemed to do the trick. Thanks me!

use this instead..

function hit(part)
        script.Parent.hit:Play()
        script.Parent.BrickColor = BrickColor.new("Institutional white")
        wait(0.2)
        script.Parent.BrickColor = BrickColor.new("Bright blue")
    end


script.Parent.Touched:connect(hit)