This forum is to be used for all discussions pertaining to The Elder Scrolls IV: Oblivion, its Knights of the Nine and Shivering Isles expansions, and any user-created or premium modules.
The player in front of the player.setav command already refers to your PC, hence selecting isn't strictly necessary. Forgive the nitpicking, but here is the correct command;
player.setav strength 50
Love is just a chemical. We give it meaning by choice ~ Eleanor Lamb, Bioshock 2: Sea of Dreams