EasyTouch Buttons (JavaScript)

Does anyone know of any tutorials for EasyTouch buttons? There seems to be plenty for joystick toturials which I have got working well, however I cannot get the buttons to work using either easytouch system or the NGUI compatability.

I've tried calling my Fire() function in the On_ButtonDown method caller from the inspector and also tried calling it in code but it doesn't work, also tried enabling NGUI comptibility and adding the NGUI camera but that doesn't work either, however if I change the input to the space bar, it works.....