Choose shock values in irf?

I want to simulate a succession of two shocks. It seems that deterministic simulation as in:
shocks;
var v;
periods 1 2 3:10;
values .001 .0003 0;
end;
simul (periods=10);
treats both shocks as known in advance (perfect foresight). On the other hand, stoch_simul computes an irf using just a one-standard-deviation shock. Is there any way to compute irfs using specific shock values?
shocks;
var v;
periods 1 2 3:10;
values .001 .0003 0;
end;
simul (periods=10);
treats both shocks as known in advance (perfect foresight). On the other hand, stoch_simul computes an irf using just a one-standard-deviation shock. Is there any way to compute irfs using specific shock values?