Code for boss fight and health bar in UEFN and Verse

boss_fight.verse

using { /Fortnite.com/Devices }
using { /Fortnite.com/Characters }
using { /Verse.org/Simulation }
using { /Verse.org/Random }
using { /UnrealEngine.com/Temporary/Diagnostics }
using { /UnrealEngine.com/Temporary/UI }
using { /Fortnite.com/UI }
using { /UnrealEngine.com/Temporary/SpatialMath}
using { /Verse.org/Colors }
using { /Verse.org/Colors/NamedColors }

health_bar := class():
    var iTotalHP<private> : float = 1000.0
    var iCurrentHP<private> : float = 1000.0
    var iBossName<private> : string = "Bulgna The Ugly"

    
    BossBarColorBase<private> : color_block = color_block{
        DefaultColor := MakeColorFromHex("000000")
        DefaultDesiredSize := vector2{X:= 1200.0, Y := 40.0}} 

    var BossBarColorTop<private> : color_block = color_block{}  
    var Overlay<private> : overlay = overlay{}
        
    HPBarTitleTextBlock<private> : text_block = text_block{DefaultTextColor := MakeColorFromHex("FFFFFF")}

    HPTitleText<private><localizes>(HPText : string) : message = "{HPText}"

    Init(BossName : string, BossTotalHP: float):void=
        set iBossName = BossName
        set iTotalHP = BossTotalHP
        set iCurrentHP = BossTotalHP
        HPBarTitleTextBlock.SetText(HPTitleText("{iBossName}: {iCurrentHP}/{iTotalHP}"))

    TakeDamage(DamageAmount : float):void=
        set iCurrentHP -= DamageAmount
        if (iCurrentHP < 0.0):
            set iCurrentHP = 0.0
 
        HealthPercentage := iCurrentHP / iTotalHP
        BarSize := BossBarColorBase.GetDesiredSize()
        NewHealthBarWidth := BarSize.X * HealthPercentage
        if (Current := Int[iCurrentHP], Total := Int[iTotalHP]):
            HPBarTitleTextBlock.SetText(HPTitleText("{iBossName}: {Current}/{Total}"))
        
        UpdateHealthBar(NewHealthBarWidth)
    
    Heal(HealAmount : float):void=
        block:

    ShowUIForPlayer(Player : player):void=
        if (PlayerUI := GetPlayerUI[Player]):
            PlayerUI.AddWidget(CreateUI())

    ShowUIToAllPlayers():void=
        block:

    MyButton : button_device = button_device{}

    UpdateHealthBar(NewWidth : float):void=
        Overlay.RemoveWidget(HPBarTitleTextBlock)
        Overlay.RemoveWidget(BossBarColorTop)
        set BossBarColorTop = CreateTopHealthBar(NewWidth)

        Overlay.AddWidget(CreateOverlaySlot(BossBarColorTop, horizontal_alignment.Left))
        Overlay.AddWidget(CreateOverlaySlot(HPBarTitleTextBlock,horizontal_alignment.Center))
        
    CreateOverlaySlot<private>(TheWidget : widget, HAlignment : horizontal_alignment):overlay_slot=  
        overlay_slot:
            Widget := TheWidget 
            HorizontalAlignment := HAlignment

    CreateTopHealthBar<private>(Width: float):color_block=
        ColorBlock := color_block{
            DefaultColor := MakeColorFromHex("ff2a00")
            DefaultDesiredSize := vector2{X:= Width, Y := 40.0}} 
        
        set BossBarColorTop = ColorBlock
        

    CreateOverlay<private>() : overlay=
        TheOverlay := overlay:
            Slots := array:
                overlay_slot:
                    Widget := BossBarColorBase
                overlay_slot:
                    Widget := CreateTopHealthBar(1200.0)
                overlay_slot:
                    Widget := HPBarTitleTextBlock
        set Overlay = TheOverlay


    CreateUI<private>() : canvas=
        TheCanvas : canvas = canvas:
            Slots := array:
                canvas_slot:
                    Anchors := anchors{Minimum := vector2{X := 0.5, Y := 0.9}, Maximum := vector2{X := 0.5, Y := 0.9}}
                    Offsets := margin{Top := 0.0, Left := 0.0, Right := 0.0, Bottom := 100.0}
                    Alignment := vector2{X := 0.5, Y := 1.0}
                    Widget := stack_box:
                        Orientation := orientation.Vertical
                        Slots := array:
                            stack_box_slot:
                                Widget := CreateOverlay()
                            
                                                                
        return TheCanvas        
    


boss_fight := class(creative_device):

 
    @editable SmashAtackCinema : cinematic_sequence_device = cinematic_sequence_device{}
    @editable ComboAttackCinema : cinematic_sequence_device = cinematic_sequence_device{}
    @editable WalkCinema : cinematic_sequence_device = cinematic_sequence_device{}

    @editable BossManip : prop_manipulator_device = prop_manipulator_device{}
    @editable Boss : creative_prop = creative_prop{}

    BossHPBar : health_bar = health_bar{}
    
    OnBegin<override>()<suspends>:void=
        AllPlayers := GetPlayspace().GetPlayers()
        BossHPBar.Init("Aknar The Terrible", 1000.0)

        if (Player := AllPlayers[0]):
            BossHPBar.ShowUIForPlayer(Player)

        BossManip.DamagedEvent.Subscribe(OnBossDamaged)

        loop:
            RotateTowardPlayer()
            MoveAnimation()
            PlayRandomAttack()
            
            
        
    PlayRandomAttack()<suspends>:void=
        if (GetRandomInt(0,1) = 0):
            SmashAnimation()
        else:
            ComboAttack()
            RotateTowardPlayer()
            ComboAttack()
            

    OnBossDamaged(Agent : agent):void=
        BossHPBar.TakeDamage(10.0)

    SmashAnimation()<suspends>:void=
        SmashAtackCinema.Play()
        Sleep(5.0)

    ComboAttack()<suspends>:void=
        ComboAttackCinema.Play()
        Sleep(6.27)


    MoveAnimation()<suspends>:void=
        WalkCinema.Play()
        AllPlayers := GetPlayspace().GetPlayers()
        if (Player := AllPlayers[0], Agent := agent[Player], Fort := Agent.GetFortCharacter[]):
            PlayerTran := Fort.GetTransform()
            Boss.MoveTo(PlayerTran.Translation, Boss.GetTransform().Rotation, 4.0)
            


    RotateTowardPlayer()<suspends>:void=
        AllPlayers := GetPlayspace().GetPlayers()
        if (Player := AllPlayers[0], Agent := agent[Player], Fort := Agent.GetFortCharacter[]):
    
            PropLocation := Boss.GetTransform().Translation
            PlayerLocation := Fort.GetTransform().Translation

            if (LookDirection := (PlayerLocation - PropLocation).MakeUnitVector[]):

                Yaw := RadiansToDegrees(ArcTan(LookDirection.Y, LookDirection.X)) - 90.0
                Pitch := RadiansToDegrees(ArcTan(LookDirection.Z, Sqrt((LookDirection.X * LookDirection.X) + (LookDirection.Y * LookDirection.Y))))
                Roll := 0.0

                NewRotation := MakeRotationFromYawPitchRollDegrees(Yaw, Pitch, Roll)

                Boss.MoveTo(Boss.GetTransform().Translation, NewRotation, 2.0)
            

This code is realy great, can you please give me advice how to remove UI when you kill the boss, I can remove text_block, but I can't remove Color Blocks. Can anyone please help me with this?