command /fly:
    trigger:
       if {fly::%player%} is not set:
          set {fly::%player%} to 0
          if {fly::%player%} is 0:
             set player's flight mode to true
             send "&aWlaczyles fly!" to player
             set {fly::%player%} to 1
          else:
             if {fly::%playee%} is 1:
                set player's flight mode to false
                send "&cWylaczyles fly!" to player
                set {fly::%player%} to 0