what is the walk through walls action replay code for pokemon diamond usa and how do you activate/deactivate?

Press R+B to activate Press L+B To Deactivate.
b21c5b48 00000000
da000000 0000210c
d3000000 00000000
d7000000 023ffe18
d2000000 00000000
94000130 feff0000
923ffe18 ffef0010
b21c5b48 00000000
dc000000 0000210c
d9000000 00000000
d4000000 fffffff0
d6000000 00000000
d2000000 00000000

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