def callback(instance):
        try:
            pathtofile = '%s/Aroma/Aroma.zip' % (Tools)
            destpath = '%s/META-INF/com/google/android' % (Rom)
            z = zipfile.ZipFile(pathtofile)
            z.extractall(destpath)
            f = open(UScript)
            text = f.read()
            f.close()
            f = open(UScript, 'w')
            f.write('''ui_print("");