What loop do I use?

Hi, I want to make a repeat until in this, but I do not know how to make it end when parent.Transparency == 0 , I don't know if it is in a different problem or something else, but I did it like this and it crashed the studio:

parent = game.workspace.Baseplate

parent.Transparency = -0.001 wait (0.01) repeat until parent.Transparency == 0

What am I doing wrong? Thank you in advance.