i want to update my database but my crashes on clicking update button

public void updateEntry(String sup) {
        // TODO Auto-generated method stub

            ContentValues cvUpdate = new ContentValues();

            cvUpdate.put(KEY_VALUE, sup);
            ourDatabase.update(DATABASE_TABLE, cvUpdate,  KEY_NAME + "='" + sup + "'", null);

            // ourDatabase.update(DATABASE_TABLE, cvUpdate,KEY_NAME + " = ? ",new String[]{ String.valueOf(sup) });

    }