look you have to pause it for any cheat here's the gnome cheat:
L1,R1,UP,X,R2
fill all moods:
first unlock gnome then pause and enter
UP,O,UP,RIGHT,L2
all objects:
first unlock gnome pause game & enter
L2,O,DOWN,LEFT,UP
all fashion:
first unlock gnome pause game & enter
SQUARE,R2,DOWN,RIGHT,SQUARE
all levels: (for this one to work you got to be in story mode)
unlock gnome then pause game and enter
O,L2,LEFT,UP,O
9,999 munnies:
unlock gnome then pause and enter
R1,L1,R2,RIGHT,LEFT
THATS ALL I GOT FOR YOU BUT IF YOU WANT MORE CHEATS GO TO IGN.COM OR CHAPTERCHEATS.COM OK!