Hi @sjesu_rajendra, thanks for the reply. This is interesting, so far all the times I use Hex-dominant parametric, including this time, the number of cells remains 10, 10, 10. Nevertheless, last night I manually changed it to 100,100,100 just to see if the resolution was the problem but even then, my mesh gives me a box with no negatives inside. Funny is also that changing the material point to 1,1,1 seems ok but 1,1.475,1 doesn’t. In my perspective, in both cases the point remains outside of the solids so the result should be the same. At this point, I will try again from zero and hopefully there will be others who have successfully done this tutorial.
Edit: I have just confirmed it by restarting the simulation from a fresh copy. Hex-dominant parametric does not seem to automatically update the number of cells.