Scripts

That is, in the editor, your map is missing from the list...
Then I would advise you not to rush into creating a campaign, but rather pay more attention to the maps. You will have to stitch the campaign together using a text editor and archivers.

I looked at the script for your map and saw this:

function GetTown(heroname)
  if heroname == "Hero9"
  then while  IsHeroGetTown("Bahia") do
    sleep(5)
  end;
  Win()
  --or--
  Win(1)
end;
end;

function new_day()
	local day, wday, week, month = GetDate(DAY), GetDate(DAY_OF_WEEK), GetDate(WEEK), GetDate(MONTH)
	if month == 7 then
		Loose(1)
	end
	if month == 5 and week == 1 and wday == 1 then
		DeployReserveHero('', 5, 135, 1)
		Trigger(NEW_DAY_TRIGGER, "new_day", "Army")
	end;
end;

Trigger(NEW_DAY_TRIGGER, 'new_day')

You said that you are a complete novice in writing scripts, but here there is already some kind of improvisation, and with a 99.9% probability, it will not work.