Plot IRFs graphic

Dear all,
I am trying to plot IRF graphic in dynare 4.5.7 . The question is:
How can i plot IRFs graphics of two models with the same variables and the same shocks I have only changed some values of the parameters of the model to be able to compare the IRF of the two models.
I really need your help! thank you in advance.

Please see Q: combining IRFs into subplotted figures & iterating?