How to add an item (ex. Costume)

Good day.

I have an question.

For activate _wXX, _yXX and others, only need modify the Cabal.main with this:

Code:

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005daf38    CMP EAX,13 (Activate _19)
005db06a    CMP EAX,13 (Activate _19)

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Or i need do something more?

I only modify CabalMain whit that, but i cant use, for example, w0.

Thanks.