Helmet Carbon

Lego Star Wars 2 the Original Trilogy Gamecube Episode 5 Chapter 5?

On my gamecube on Episode 5 Chapter 5, in the first fight with Darth Vader (in the carbon freezing area) after i defeat him and he leaves the room, i build the crane get a storm trooper helmet and drop R2 by his activation panel but he doesn’t open it. Why is it not working and how do i fix it?

If you ask this in Vidoe and Online Games, someone there might be able to help you.

HJC FS-15 Carbon Motorcycle Helmet