Queries in FIREBASE with expandableListView

Hello, someone could help me to check that I am doing wrong in my query, what happens is that I can not recover the type in firebase of each question that I select in the expandable ListView Please and thank you ..

            myRef.child("CuestionarioAll").child(CuestionarioGanaderiaActivity.cues).child(listDataHeader.get(groupPosition)).child(listDataChild.get(listDataHeader.get(groupPosition)).get(childPosition)).addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot dataSnapshot) {
                    for (DataSnapshot objSnapshot:dataSnapshot.getChildren()){
                        ResInformation p = objSnapshot.getValue(ResInformation.class);
                        String prueba = p.getTipo();
                        String convertedStringObject = prueba.toString();
                        //myRef.setValue(p.tipo);
                        Toast.makeText(CuestionarioS.this, ""+convertedStringObject, Toast.LENGTH_SHORT).show();
                    }
                }
                @Override
                public void onCancelled(DatabaseError databaseError) {
                }
            });