Hi how do I change the transparency of my baseplate?

i = 0

Base = game.Workspace.Baseplate

Base.BrickColor = BrickColor.new("Really red")

while true do

wait(0.1)

Base.Transparency = i

i = i + 0.01

if i > 1 then

i = i - 0.02

print(0)

end

end

i'm not sure how i can revert back my transparency after the baseplate goes to 1

Try putting a while loop in your if statement, cause right now, you're only telling it to subtract 0.02 from i only when i is greater than one. So when the while loop starts again, it would add 0.01 back to i, but that. So to fix that:

if i > 1 then
    while true do
    wait(0.01)
    i = i- 0.02
    Base.Transparency = i
    if i < 0 then
	    break
    end
end

What you are doing is checking if the base plates transparency goes over one then -.02. But after that you add another .01 because its in a while loop. So it will be stuck at near 1. you have to make sure that the base plate goes back down to zero before it starts adding again.

i = 0
Base = game.Workspace.Baseplate
Base.BrickColor = BrickColor.new("Really red")

while true do

	wait(0.1)
	Base.Transparency = i
	i = i + 0.01
	
	if i >= 1 then
	repeat
		i = i -.02
	until i <= 0
	
		print(0)
	end
end