Why doesn't the one way door work anymore?

script.Parent.Touched:Connect(function(hit)
    if game.Players:GetPlayerFromCharacter(hit.Parent) then
        local plr = game.Players:GetPlayerFromCharacter(hit.Parent)
        local char = plr.Character
        local tor = char.Torso
        tor.Velocity=script.Parent.CFrame.lookVector * 100
    end
end)

This is a "One-way door". It used to work but now it doesnt? What is the deal with roblox?

Is it the torso's velocity or the lookvector