Tip: Take advantage of easy to install Patches in your hack. The No More Sprite Tile Limits or SA-1 patches should be considered if you're encountering glitches where Mario and/or sprites are turning invisible.
While the conversion is done correctly, I may remind you, Fermín, that just adding "!addr" to a few lines of code in order to make a resource SA-1 hybrid does not count towards adding you as a co-author. Your name in the readme or code comments stating you did the conversion should suffice. I kindly ask you to refrain adding yourself as a co-author unless your contribution is too grand to pass by.