I am playing Fallout 3 for the PlayStation 3. I'm having trouble getting exp points I am at level 20. Everything I do the exp bar wont come up. What should I do?

If you don't have the DLC Broken Steel, the level cap is 20. Buying and installing Broken Steel will raise your level cap to 30.

There is a cheat code for that but am not sure if it works. I set mine at 40 when I started a new game but am only at level 17 so will not know for a couple of days if it worked. i was just messing around with it . I think it was either setGS IMaxCharacterLevel ## or setGS FMaxCharacterLevel ## I know that setGS FJumpHeightMin 300 Works pretty good at getting places you ain't supposed to be. But be warned jumping in to the never world will at times get you stuck in there, so save the game before you jump into a blind spot.

I'm not sure console commands are possible on the PlayStation 3.