How to get the outputs of every generation that is generated using ga and save it in workspace

suppose , i used

objFcn =@(t) sim(net,t'); nvars =3; LB=[40,50,60]; UB=[90,110,100]; [X,FVAL] = gamultiobj(objFcn,nvars,[],[],[],[],LB,UB)

the above code optimizes and gives only certain values of x and their values for which the output of neural network 'net' is minimum in the given bounds.

But i want to save all the outputs produced by the net for every generation of ga, How can i do that? Hope i was clearly able to explain my question. Thank you.