after run the below code this error generated (Sizes vector returned by MATLAB S-function 'new_two' in 'new_one/S-Function' must be a real vector consisting of integer value of length 7) please could any one support me in this issue

function [sys,x0,str,ts] = new_two(t,x,u,flag)

switch flag,

case 0,
  [sys,x0,str,ts] = mdlInitializeSizes;

case 2,                                                
  sys = mdlUpdate(t,x,u); 

    case 3,                                                
    sys = mdlOutputs(t,x,u);

    case 9,                                                
    sys = []; % do nothing

    otherwise
    DAStudio.error('Simulink:blocks:unhandledFlag', num2str(flag));
end

% mdlInitializeSizes

function [sys,x0,str,ts] = mdlInitializeSizes L = 1; N = 10; xn = linspace(0,L,N); tn = 0:1:9; h= xn'*tn; sizes = simsizes; sizes.NumContStates = 0; sizes.NumDiscStates = size(h); sizes.NumOutputs = size(h); sizes.NumInputs = size(tn); sizes.DirFeedthrough = 1; sizes.NumSampleTimes = 1; sys = simsizes(sizes); x0 = zeros(size(h)); str = []; ts = [-1 0]; function sys = mdlUpdate(~,x,u) M = 1; L = 1; T = 10; N = 10; p = 0.1; xn = linspace(0,L,N); h = xn(2)-xn(1); k = (h/sqrt(T/p)); r = 0.8*((k^2*T)/(h^2*p)); v = (T*k^2)/(M*h); s = k^2/M; x(1) = (1-r)*x(2) + (r/2)*x(3) + x(4)+(k^2/(2*p))*u(1); x(5) = -x(6) + 2*(1-r)*x(7) + r*x(8) + x(9)+(k^2/p)*u(1); x(10) = (1/(2-v))*(x(11) + x(12) - x(13)+s*(u(2)+u(3))); sys(1) = x(1); sys(2) = x(2); sys(3) = x(3); sys(4) = x(4); sys(5) = x(5); sys(6) = x(6); sys(7) = x(7); sys(8) = x(8); sys(9) = x(9); sys(10)= x(10); sys(11)= x(11); sys(12)= x(12); sys(13)= x(13); function sys = mdlOutputs(~,x,~) sys = x;