query relation parse , leancloud

    success: function(user) {


// incorrect var relation = user[0].relation("RelationBuilding");

var relation = user[0].relation("RelationBuilding");
relation.query().find({
 success: function(list) {
  response.success(list);
 },
 error: function(error) {
  response.error(error);
 }
});
};