[SOLVED] Part with BodyVelocity rotating?

Today i was testing some BodyVelocity scripts. So i build a platform that goes forward, but, the only problem is that when someone get on that platform it rotates like crazy. Other things such as the force, altitude and weight wasn't affected.

Here's the script

local Detector = script.Parent.Parent:WaitForChild("ClickDetector)
Detector.MouseClick:Connect(function(player)
local HLSpeed = 10
script.Parent.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
script.Parent.Velocity = Vector3.new(0,0,2)
script.Parent.Velocity = script.Parent.Parent.CFrame.LookVector *HLSpeed
end)

Is there a way i can make a block that can be moved but not rotated?