Hi PippyP
If your Tribunal is in two weeks' time, you are probably too late to amend your paperwork. (You are allowed to amend up to two weeks before, but depending on the exact date, you are probably too late. You would need to contact the Tribunal service to check. Certainly, you are too late to post anything. You can always tell the Tribunal panel on the day.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems