I have a script that makes a plant grow, and currently the script makes the bottom part, the primary part, always be touching the floor/baseplate. But that only works when it is already touching the baseplate. Moving the plant up causes it to reposition upwards more than it should. Any help?

function resizeModel(model,a)
	local base = model.PrimaryPart.Position
	for _,part in pairs(model:GetDescendants()) do
		if part:IsA("BasePart") then
			part.Position = base:Lerp(part.Position,a) 
			part.Size *= a
		end
	end
end

local ss = game.ServerStorage


while true do
	wait(0.01)
	while script.Parent.PrimaryPart.Size.X <  game.ServerStorage:FindFirstChild(script.Parent.Name).PrimaryPart.Size.X * 4  do -- this is running until the model hits approx 10 times its original size
		wait(.01)

		resizeModel(script.Parent, 1 + ( game.ServerStorage:FindFirstChild(script.Parent.Name).PrimaryPart.Size.X / 100 )) -- this is actually resizing the model
		local offset = 1 + game.ServerStorage:FindFirstChild(script.Parent.Name).PrimaryPart.Size.X * .01
	
		
		script.Parent:PivotTo(CFrame.new(script.Parent.PrimaryPart.Position.X,script.Parent.PrimaryPart.Position.Y * offset, script.Parent.PrimaryPart.Position.Z)) -- this is my base for compensating with the ground
		script.Parent:PivotTo(script.Parent:GetPivot() * CFrame.Angles(0, math.rad(0), 0))
		--                                                                          ^ angle of rotation for the plant
	end
end
Anonymous