This is what worked for me:
asset Ask identified by askId
{
    o String askId
    o String title
    o String[] options
    o Integer[] votes
}
asset Poll identified by pollId
{  
    o String pollId
    --> Ask[] asks
}
transaction count {
    --> Poll pollId
}
transaction processor function :
/**
 * count transaction
 * @param {org.sample.count} count
 * @transaction
 */
function count(count) {
  count.pollId.asks.forEach(function(ask) {
    var serializer = getSerializer()
    var serializer = getSerializer();
    var jsonObj = serializer.toJSON(ask);
    console.log("Ask: ", ask);
    console.log("Ask jsonObj: ", jsonObj);    
  });
}
try this and see if this works