Storing found values in an array

Hi everyone I've written an optimization code for exercise. The results are a series of xs(optimimum moles of different components in the mixture at the equilibrium) and fvals(the minimum values) for different temperatures. I would like to store in an array certain xs,precisely only the x3(7)s that satisfy my "if "condition,so i can use it in a plot. But the result isn't good,if i ask to matlab to visualize the y(j) it gives me only zeros, and I can't really understand where's my mistake. Is there anybody who can give me some tips? Here's part of the code:

for j=1:length(T)
       Tj = T(j);
       Gjt =Gj3(j,:); 
       y(j)=zeros;
       b3eq = [1*FR + 1    
       2*FR + 4         
       1];                     

LB3 = [0 0 0 0 0 0 0 0 0 0]; 

x3_0 = [0 0 0 0 0 0 0 0 0 0]+1e-6; 

options = optimset('Algorithm','interior-point','MaxFunEvals',1000000,'MaxIter',10000000,'TolCon',1e-12);
[x3,fval] = fmincon(@func3t,x3_0,[],[],A3eq,b3eq,LB3,[],[],options); 

G3=fval*R*Tj;      % kJ/mol

if x3(7)<10e-7
    break
   y(j)=x3(7);

end
Thanks a lot!

Answer 1

[Isabella Osetinsky-Tzidaki]

any command located between "break" and "end" cannot be performed