Xxx.valid? still true after xxx.errors.add(...)?

Hi all

I have the following code in my controller:

if @comment.valid?
  captcha_url =

http://captchator.com/captcha/check_answer/#{captcha_code}/#{@comment.captcha}
result = open(captcha_url)
unless result.read == “1”
@comment.errors.add(:captcha, “Captcha wurde nicht korrekt
eingegeben”)
raise “#{@comment.valid?}”
end
end

Although I’m adding an error to :captcha, when I raise @comment.valid?
on the next line this still gives me true! Why is that? I just added an
error to @comment, didn’t I?!

Thanks
Josh

I’m sorry, this belongs to the RoR part of this forum… I’ll re-post it
there.