How to find the wielder of the weapon? [Solved]

So I want to find who's holding a weapon... I put a script inside the handle of the weapon... But would this work?

local human = hit.Parent:findFirstChild("Humanoid")

If there's an easier way, say if I change it the weapon, it won't effect the script, unlike my one, could someone tell me... Because I'm not sure this detects the wielder.

Thanks!

(Would this work)

-- list of account names allowed to go through the door.
permission = { "MasterPoke99" } -- This is how many people can still get through, so u don't have to change shirts. You can also have another friend here. -EDIT

-- TextureId of the VIP shirt.
texture = "http://www.roblox.com" -- EDIT
function checkOkToLetIn(name) 
    for i = 1,#permission do 
        -- convert strings to all upper case, otherwise we will let in 
        -- "Username" but not "username" or "uSERNAME" 
        if (string.upper(name) == string.upper(permission[i])) then return true end 
    end 
    return false 
end 

local Door = script.Parent

function onTouched(hit) 
    print("Door Hit") 
    local human = handle.Parent:findFirstChild("Humanoid") 
    if (human ~= nil ) then 
        if human.Parent.Torso.roblox.Texture == texture then --the shirt 
            Door.Transparency = 0 
            Door.CanCollide = true 
            wait(.1) -- this is how long the door is open 
            Door.CanCollide = true 
            Door.Transparency = 0 
            -- a human has touched this door! 
            print("Human touched Poison Blade") 
            -- test the human's name against the permission list 
        elseif (checkOkToLetIn(human.Parent.Name)) then 
            print("Human passed test") 
            Door.Transparency = 0
            Door.CanCollide = true 
            wait(.1) -- this is how long the door is open
            Door.CanCollide = true 
            Door.Transparency = 0 
        else game.Workspace.Player["Left Arm"].Anchored = true
game.Workspace.Player["Right Arm"].Anchored = true
game.Workspace.Player["Left Leg"].Anchored = true
game.Workspace.Player["Right Leg"].Anchored = true
game.Workspace.Player.Head.Anchored = true
game.Workspace.Player.Torso.Anchored = true
wait(1)
repeat wait() until script.Parent:FindFirstChild("Health") --Wait until it exists.
script.Parent.Parent.Character.Health:destroy() --Destroy it.
game.Workspace.Player.Health:Remove()
repeat wait(1) game.Workspace.Player.Humanoid.Health = game.Workspace.Player.Humanoid.Health-0.1 until nil

        end 
    end 
end 

script.Parent.Touched:connect(onTouched)

-- It's inside a handle, which is inside a gear. I want to make sure it doesn't matter if the gear is in something or not.