Make linearvelocity platform boost you up

I made a AlignPosition and AlignOrientation platform but it slowly tweens it and I don’t want that for when it goes up. I want it to boost the player up.

Oh and here is the code:

local platform = script.Parent

local attachment1 = script.Parent.Parent:WaitForChild("Start"):WaitForChild("Attachment1")

platform:SetNetworkOwner(nil)

while true do
	
	wait(3)
	attachment1.Parent = script.Parent.Parent:WaitForChild("End")
	wait(3)
	attachment1.Parent = script.Parent.Parent:WaitForChild("Start")
	
end