How update my Sqlite for Android in 8 String?

How update my Sqlite for Android in 8 String?

  if (videoBool==0 || audioBool==0){
        DBHelper dbHelper=new DBHelper(this);
        SQLiteDatabase database= dbHelper.getWritableDatabase();
        ContentValues contentValues=new ContentValues();
        contentValues.put("indexAuthor",indexAuthor);
        contentValues.put("indexPoetry",indexPoetry);
        contentValues.put("videoBool",videoBool);
        contentValues.put("audioBool",audioBool);
        database.update("MediaBool",contentValues,position,null);
        dbHelper.close();
    }

I need to update a row in the table which is on the 8th position