I need some help with enabling battery percentage. I installed unrestricted system ui and so far successfully installed LED notifications.

I followed the instructions in the wiki page... this is what i typed in.

devel-su
password : (typed the password)

gconftool-2 -s /desktop/meego/status_area/display_percentage -t bool true

After i entered that nothing happened it just went to the next line, I rebooted and refreshed the phone but no luck. Am I missing a step?