I would like to union two puzzles in one. The first puzzle is a slitherlink, the second is a nonogram. The main idea is: the slitherlink's solution is the entrance for the rows of the nonogram.
In the slitherlink one can use only five labels: 0, 1, 2, 3 and None.
In my case I used 1, 2, 3 (left figure). But in the nonogram I must use natural numbers that are greategreater than 3 (for instance, '4' in right figure).
Question. I am looking for anany ideas how to union these two puzzles? I don't want to use explicit labels ("4" in my case) in the slitherlink.