Using BNKs in Riivolution

[Thomasco2013]

So Im back, and I started continuing my library of perfect hack character with SFX and all. Two months ago I got the right code to use BNKs, but no going back to use riivolution, Im confused on how to type a code in the xml to patch the bnk on the disc. I know that the directory on the sd should be corresponding to my sd directory, (ssbb/SFX/41.bnk...) but how do I do the disc= part? Should I do create directory to sfx? Or something else? Heres my code....

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  <file external="/ssbb/SFX/41.bnk" disc="(area of issue)" />

What would I put in said area of issue.

Sorry if this is hard to understand with the way I wrote it to explain.