hitbox expender

local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local LP = Players.LocalPlayer
local Size = 10

RunService.Heartbeat:Connect(function()
    for _, p in ipairs(Players:GetPlayers()) do
        if p ~= LP and p.Team and p.Team.Name ~= "Lobby" and p.Team ~= LP.Team then
            local char = p.Character
            local head = char and char:FindFirstChild("Head")
            local hum = char and char:FindFirstChildOfClass("Humanoid")

            if head and hum and hum.Health > 0 and head.Size ~= Vector3.one * Size then
                head.Size = Vector3.one * Size
                head.CanCollide = false
                head.Massless = true

                local neck = char:FindFirstChild("Neck", true)
                if neck and neck:IsA("Motor6D") then
                    neck.C1 = CFrame.new(0, -Size / 2 + 0.5, 0)
                end

                local box = Instance.new("SelectionBox")
                box.Name = "HitboxVisual"
                box.Adornee = head
                box.Color3 = Color3.new(1, 0, 0)
                box.LineThickness = 0.15
                box.SurfaceTransparency = 0.8
                box.Parent = head
            end
        end
    end
end)