why this gun shooting script isn't working at all?

so i tried to make a gun. first i tried to make a shooting script that just shoots a small yellow brick here's the script:

local tool = script.Parent
local shootpart = tool.Shoot
tool.Activated:Connect(function()
        local bullet = Instance.new("Part")
        local bulletscript = tool.Bullet:Clone()
        bullet.Size = Vector3.new(0.1,0.1,0.1)
        bullet.BrickColor = BrickColor.new("New Yeller")
        bullet.Parent = workspace
        bulletscript.Parent = bullet
        bulletscript.Disabled = false
        bullet.Position = shootpart.Position
        bullet.Velocity = shootpart.CFrame.LookVector*10
end)

doesn't work of course