Tween Particles Transparency Number Sequence

I can’t somehow get this to work and am running out of ideas. Anyone has any idea?
yes parto is a particle emmiter

local timeontween = TweenInfo.new(0.25)
					game:GetService("TweenService"):Create(parto,timeontween,{Transparency = NumberSequence.new(1)}):Play()

It seems to be an incorrect usage of NumberSequence.new().
You may read about it in the following article.