追加/削除を交互化する

command /entry:
    trigger:
        add "A" to {entry::*}
        loop {entry::*}:
            if loop-value contains player:
                remove player from {entry::*}
                send "削除しました"
            else:
                add player to {entry::*}
                send "エントリーしました"
        remove "A" from {entry::*}

command /entry:
    trigger:
        add "A" to {entry::*}
        loop {entry::*}:
            if loop-value contains player:
                remove player from {entry::*}
                send "削除しました"
            else:
                add player to {entry::*}
                send "エントリーしました"
        remove "A" from {entry::*}