Updating Joysticks in a Command

[Snapperbot]

I want to make a command that when hold a button it sets two motors speeds to the value of the throttle of a joystick(we're using the Logitech ATK3). I'm running into an issue where it doesn't like updating the value of the joystick when I hold the button(It crashes the robot and the driver station gives me the Robots don't quit message). When the command is constantly running there's no issue, but I would like it to not constantly run. I can make the command's parameters request a double and then in OI put in the joysticks throttle value there but it doesn't update after the init of the robot.

Any help is appreciated