Big hit box player for medic kit

local BigHeadSize = 10
local NormalHeadSize = Vector3.new(1, 1, 1)
local ToolsToAffect = {"Medical Bow", "Recurve", "Vitabow" "Mastermind's Rifle",}

-- Executor-friendly script that runs on the client's side.
local player = game.Players.LocalPlayer
local function checkHead(player)
    local character = player.Character
    if character and character:FindFirstChild("Head") then
        return character.Head
    end
    return nil
end

game:GetService('RunService').RenderStepped:Connect(function()
    -- Ensure player and head exist
    if not player or not player.Character or not player.Character:FindFirstChild("Head") then return end

    -- Check if player is using the correct tool
    local usingCorrectTool = false
    local equippedTool = player.Character:FindFirstChildOfClass("Tool")
    if equippedTool then
        for _, toolName in ipairs(ToolsToAffect) do
            if equippedTool.Name == toolName then
                usingCorrectTool = true
                break
            end
        end
    end

    -- Iterate through other players and modify head properties
    for _, otherPlayer in ipairs(game:GetService('Players'):GetPlayers()) do
        if otherPlayer ~= player then
            local otherHead = checkHead(otherPlayer)
            if otherHead then
                if usingCorrectTool then
                    otherHead.Size = Vector3.new(BigHeadSize, BigHeadSize, BigHeadSize)
                    otherHead.Transparency = 0.5
                    otherHead.BrickColor = BrickColor.new("Red")
                    otherHead.Material = "Neon"