on damage:
    attacker is a player
    set {_healthbar} to new bossbar
    set {_maxhalth} to victim's max health
    set {_health} to victim's health
    set {_gage} to {_health}/{_maxhealth}
    set title of bossbar {_healthbar} to "&c%victim%'s health    %{_health}%/%{_maxhealth}%"
    set color of bossbar {_healthbar} to RED
    set style of bossbar {_healthbar} to SEGMENTED_20
    set progress of bossbar {_healthbar} to {_gage}
    add attacker to bossbar {_healthbar}
    wait 3 second
    remove attacker from bossbar {_healthbar}
command /test:
    trigger:
        set {_test} to new bossbar
        set title of bossbar {_test} to "&cTEST"
        set color of bossbar {_test} to RED
        add player to bossbar {_test}
        wait 10 second
        remove player from bossbar {_test}