how to find maximum value of 2nd column of matrix 22x2?

 I have the next matrix A I want to find maximum value of 2nd column of it,
but the matlab didn't accept the step!!!

 A = [1 32143;2 1;3 98998;4 45321;5 96856;6 32143;7 9991;8 4343;9 34454;10 9991;11 9991;12 654;13 6798];
[n m] = size(A);
min = min(min(A));
max = max(max(A));
s = 1;
for k = min:max
    t = 0;
    for i = 1:n
        for j = 1:m
            if A(i,j) == k
                t = t+1;
            end
        end
    end
    N(s,:) = [k t];
    if t == 0
        N(s,:) = N(s-1,:);
        s = s-1;
    end
    s = s+1;
end
[num index] = max(N);

thanks

Answer 1

[Azzi Abdelmalek]

[num idx]=max(A(:,2))

[Rasha]

thank you Azzi Abdelmalek for answering me, I'm so sorry I submit wrong code, but I edit it now. matlab produce an error "Indexing cannot yield multiple results." for it

[Azzi Abdelmalek]

You have used max as a variable

max = max(max(A));

Then used it as a function, Matlab does not recognize it as a function

[num index] = max(N);

Do not use function names as variables; use for example

   max_value = max(max(A));

%OR

     max_value = max(A(:));

[Rasha]

 yes of course, :)
I didn't observe that
thanks too much