I read through the readme in Princess Stomper's mod, and this is what she has to say:
Now you may equip the ring. You will instantly see that your character has
high-level stats, but is still showing as level 1. Don't worry about this - it is a quirk of
the game - you are level 10 (or 20 or 50) as far as the game is concerned.
So did you try activating your dialogue after setting the command? Or did you see that the level showed as 1 and you didn't try to do the dialogue? Apparently the game sets your level properly but it just doesn't show up correctly. It will show when you save and reload the game.
Just try setting your level and then activate the dialogue. To see if your level changed, type
player->GetLevel.
Darn! Ninja'd by Narfblart the Ogrim.