output a matrix from embedded matlab function block

Inside a simulink model, I want to transform a vector V=[g,h]' to V1=[k k-g k-g-h]' where k varies from 0 to 2. and out of the three possible vectors of V1 ( for k=0,1,2) I should select only those vectors that contain all non-negative elements. for this I have used embedded matlab function block and wrote the program as given below but gives error (Data 'u' (#124) is inferred as a variable size matrix, while its specified type is something else.)

please help..

function u = fcn(g,h)

%#codegen

v=[0 0-g 0-g-h;1 1-g 1-g-h;2 2-g 2-g-h]';

% this will create a matrix where the colum represents the 3 possible vectors for k=0 to 2.

t= any((v)<0);% this check the columns of 'v'

u=v(:,~t); %'u' is the new required matrix where the column gives the required vectors .

end