Accessing root!

1

I’m trying to set a movieclip’s alpha to 0 when a certain frame is reached in a movieclip that’s 2 levels down. Should be easy, but isn’t working for me. I’ve been looking over documentation unsuccessfully. Basically, when frame 30 is reached inside the “loader” movieclip, i want the movieclip “form” on the main stage to go to 0 alpha. I’ve been trying various lines on frame 30 inside “loader”, a couple are below…

Hierarchy = root.mc.loader

  1. MovieClip.(root.form).alpha = 0;

  2. root.form.alpha = 0;