I am having trouble programming a limit switch for my NBN robot in ROBOTC. My robot's main goal is the high lift. Because of the way I built my robot, when the lift is down I can still pull the lifter down which cause the frame to bend forward. This is my first year doing VEX and I am not very good at coding yet. My solution to this was to put a limit switch just under the ramp so when it is down, the switch is pressed. I have my 4 lifter motors coded to Channel 3 on the controller. The way my sister teams and I decided to code this was to try and code it so that when the switch is pressed, Channel 3 can only be + so the motors could only push up. This did not work as the motors could still be pulled down.