Can someone tell me how to fix the number of time steps and max iterations per time step in a journal file ?

Thanks in advance !

I am not sure if you can do it interactively but at the start up you use

solve dti 100 50 y

where 100 is no. of time steps and 50 is max per time step.

You can try this:

; Solve Interations solve/set/time-step #-time-step solve/dual-time-iterate #-total-time-steps #-inner-iterations-per-time-step