Weird style error

Dear all

@text_108 = TextCtrl.new(@panel_106, -1, “”, DEFAULT_POSITION,
DEFAULT_SIZE,
TE_PROCESS_ENTER|TE_RIGHT, DEFAULT_VALIDATOR)

Why is that line up there give me error
uninitialized constant Main::TE_RIGHT (NameError)

same case happen with TE_CENTRE
but runs ok with TE_LEFT

I use Ubuntu 9.10 with ruby 1.8.7 with gem from previous thread on this
mailist

Regards
Hendra