Hi I am pretty new to using this and I have tried to setup what i thought was a basic door using drawbridges as shown in the picture. What I want to do is have it so that the door is normally closed and you press the button to open, but also the lever on the left in the picture can be switched to disable the button from opening the door. Is there anyway to do this as I know that the drawbridges need to be inverted to have the door closed. Any help would be appreciated thankyou. I am trying to do this on an Unleashed server running 1.1.3.