Pillars

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

local m = Instance.new("Model")
m.Parent = game.Workspace
m.Name = ("Pillars")

function onKeyPress(inputObject, gameProcessedEvent)
	local key = inputObject.KeyCode
	if key == Enum.KeyCode.R then
		local p = Instance.new("Part")
		p.Size = Vector3.new(10, 0.05, 10)
		p.Parent = game.Workspace.Pillars
		p.Anchored = true
		p.CFrame = mouse.Hit
		p.Orientation = Vector3.new(0, p.Orientation.Y, 0)
		p.TopSurface = ("Smooth")
		p.BottomSurface = ("Smooth")
		p.Reflectance = (0.2)
		local v = Instance.new("NumberValue")
		v.Parent = p
		v.Name = ("MaxHeight")
		v.Value = (math.random(250,600))
	end
end

game:GetService("UserInputService").InputBegan:connect(onKeyPress)

while true do
	wait(0.01)
	for i,v in pairs(m:GetChildren()) do
		if v.ClassName == ("Part") then
			if v.Size.Y <= (v.MaxHeight.Value) then
				v.CanCollide = false
				v.Size = v.Size + Vector3.new(0.02, 7.5, 0.02)
				v.CanCollide = true
			end
		end
	end
end