the output of my embeded matlab function is not updated inside the " for loop", display only the last result of the for loop

My code consist to read one by one the elements of my vector input with a for loop, before I send it to another block function, the output of this block function is reinjected to my embeded function .

if true
  function [Power,dutty] = Evaluation_fun(par,I)
eml.extrinsic('pause');
N=size(par,1);
%%%%%%%%%%%%%initialisation des variables%%%%%%%%%%%%%%%%%
persistent P 
if isempty(P)
    P = zeros(N,1);
end
persistent M
if isempty(M)
   M = 0;
end
persistent cur 
if isempty(cur)
   cur =  zeros(N,1);;
end

%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% dutty=0; Power=zeros(N,1); for i=1:N M = par(i,:); dutty=M; pause(0.5); cur(i) = I;

       P(i)=cur(i)*cur(i);
       Power(i)=P(i);
    end

end