Event.listen() not working

[TheAsher 0]

I am trying to create an interface for my big reactors/turbines. The screen is currently displaying all the relevant info, and now I want to move on to the buttons, but I can't get the touch event to work. So far I've got this:
 

local buttons = {}

buttons["reactor"] = {
  ["active"] = false,
  ["x"] = 45,
  ["y"] = 2,
  ["height"] = 5,
  ["width"] = 20,
  ["text"] = "test"
}

local function handleTouch(addr, x, y, button, player)
	button["reactor"]["active"] = true
	gpu.set(x, y, button)
	print(x, y, button)
end

event.listen("touch", handleTouch)

But it doesn't seem to work. Any help would be appreciated, thanks! 

[TheAsher 0]

Okay apparently you it won't register the touch event if a while true loop is running, so I added os.sleep(0.1) to the loop and not it works.