This is what I have:
player.Character.HumanoidRootPart:FindFirstChild("Streak").Transparency = NumberSequence.new(0.5)
Thanks!
I am new to scripting so idk if this will work but its worth a shot.
trail = player.Character.HumanoidRootPart:FindFirstChild("Streak") trail.transparency = NumberSequence.new(0.5)