parfor error with 3d matrix

I am a newbie with parfor use. Why does not the following run and give an error?

G=ones(11,11,5) ;
parfor i=1:10
    v=zeros(1,5);
   for j=1:5
       v(j)=rand(1);
   end
    G(i,i,:)=v;
end

Answer 1

[Walter Roberson]

The parfor index variable can only appear in one index position inside the body of the loop.

Create a 2D array and extend it after the loop

G = ones(11,11,5);
G2 = ones(11, 5);
parfor i = 1 : 10
    v = zeros(1,5);
    for j = 1 : 5
        v(j) = rand(1);
    end
    G2(i, :) = v;
end
for i = 1 : 11;
    G(i, i, :) = G2(i, :);
end