Livequery on Relational Query

is it possible to retrieve data from Livequery with a relational query like my queryComment of the example ?

example:

QueryBuilder queryPost =
QueryBuilder(ParseObject(‘Post’))
…whereValueExists(‘image’, true);

QueryBuilder queryComment =
QueryBuilder(ParseObject(‘Comment’))
…whereMatchesQuery(‘post’, queryPost);

because it is not working for me at the moment .

Once you build a query for the live query, you can just generate the object “ParseLiveQuery”.
but notice that you should set the values when you serve.