Photoswitches flashes true but then stays false

[kinganu123]

Ok, so we were testing out the photoswitches.
The wiring is this:
Brown the positive
Blue to negative
Both on the power distributor with a 20 amp circut breaker
White to port 1 in the digital I/O of the digital sidecar
Basically what happens is that we hit enable, the value flashes true (we have the value printed to the DriverStationLCD) and then stays false.
Here is my code so far

DigitalInput tracker = new DigitalInput(1);
teleopPeriodic(){
DriverStationLCD.getInstance().println(Main6, 1, ""+tracker.get());
DriverStationLCD.getInstance().updateLCD();
}