Has anyone had trouble with deleting cookies?

i just can’t do it!
i assigned a cookie:

cookies[:logged_in] = {:value => session[‘user’].email, :expires => nil,
:path => ‘/’}

it saved, as i saw the cookie in the browser preferences;
and then tried to delete it.

cookies.delete :logged_in

and IT DOESN’T WORK!!!
has anyone had any problems with this or am i missing something really
really stupid?

forget it. it was stupid.