loading / calling a prepared Auto Regressive model in another for- loop

Hi all, I've written a program which generate an one-order Auto Regressive modele, named AR(1) model, for each month, i.e. t=1:12. The program is below:

clc; clear; 
inflow='inflow.txt';        
inflow=load(inflow); 
for t=1:12

      q=inflow(:,t);
  %%%%%%GENERATION OF AUTO-REGRESSIVE MODEL 

      ar_prmtr= ar(q(:,t),1)
      present(ar_prmtr);
  end

I want to use/call constructed model named " ar_prmtr " for another loop. How can I load the " ar_prmtr " model ?

Any help would be appreciated.