command /gamma:
    trigger:
        if {gamma::%player%} is not set or if {gamma::%player%} is false:
            set {gamma::%player%} to true
            send "&aWłączono Gammę!" to player
        else:
            set {gamma::%player%} to false
            send "&cWyłączono Gammę!" to player
            execute console command "effect clear night vision"

every 1 seconds:
    loop all players:
        if {gamma::%loop-player%} is true:
            apply night vision to the loop-player for 1 seconds