The Sims 2 Castaway- PSP cheat codes

Here's a couple of cheats for the Sims 2 Castaway:

Launch the game and then we must bring up a gnome, who will give the other cheat codes:

• Gnome: L+R+Up+X+R
• All the Plans: X+X+R+R
• Miscellaneous resources: Square+triangle+up+down+R+down
• Max of food and resources: Square+square+square+square+L