Anti team kill gun not working?

local tool = script.Parent
local player = game:GetService("Players").LocalPlayer
local t = player.Team
print(t)

tool.Equipped:connect(function(mouse)
    print("Tool equipped!")

    mouse.Button1Down:connect(function()
        print("Mouse pressed!")
        local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 300)
        local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)

        local beam = Instance.new("Part", workspace)
        beam.BrickColor = BrickColor.new("Brick yellow")
        beam.FormFactor = "Custom"
        beam.Material = "Plastic"
        beam.Transparency = 0.25
        beam.Anchored = true
        beam.Locked = true
        beam.CanCollide = false

        beam.FrontSurface = "Smooth"
        beam.BackSurface = "Smooth"
        beam.LeftSurface = "Smooth"
        beam.RightSurface = "Smooth"
        beam.BottomSurface = "Smooth"
        beam.TopSurface = "Smooth"

        local distance = (tool.Handle.CFrame.p - position).magnitude
        beam.Size = Vector3.new(0.3, 0.3, distance)
        beam.CFrame = CFrame.new(tool.Handle.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)

        game:GetService("Debris"):AddItem(beam, 0.1)

        if part then
            local humanoid = part.Parent:FindFirstChild("Humanoid")

            if not humanoid then
                humanoid = part.Parent.Parent:FindFirstChild("Humanoid")
            end

            if humanoid then
                if humanoid.Parent then
                    local p = (game.Players:GetPlayerFromCharacter(humanoid.Parent))
                    print(p.Team)
                    if p == t then
                        humanoid:TakeDamage(0)
                    end
                    else 
                end

                humanoid:TakeDamage(30)
            end
            end

    end)
end)

t stores the players team and p is the targets team. It still damages players of the same team what matter what I do. Any idea? - Thanks