landmark goal for lionel messi at the nou camp on saturday as he made it 400 goals for barcelona in a 2-0 win over valencia .
between the two strikes claudio bravo saved a dani parejo penalty as valencia dominated the first half but they could n't make their pressure tell .
for messi , still only 27 , it was another milestone .
` i hope to score many more , ' he wrote on his facebook page .