how to get subchild data and value in boost library

//hello here is code
try
{
BOOST_FOREACH(boost::property_tree::ptree::value_type &v, pt1.get_child("Abc"))
{

if(v.first == "scs")
{
int szData;// = v.second.data();
szData = v.second.get_value<int>();
}

if(v.first == "Cat")
{
std::string szData = v.second.data();
CString sztemp;
sztemp.Format(_T("%S"), szData.c_str());
}

if(v.first == "CatS")
{
std::string szData = v.second.data();
CString sztemp;
sztemp.Format(_T("%S"), szData.c_str());
}

BOOST_FOREACH(boost::property_tree::ptree::value_type &pt1, v.second.get_child("playlists"))
{

boost::property_tree::ptree pt2 = v.second;
if(v.first == "id")
{
std::string szData = v.second.data();
CString sztemp;
sztemp.Format(_T("%S"), szData.c_str());
}
}

}


{
BOOST_FOREACH(boost::property_tree::ptree::value_type &playlist, v.second.get_child("playlists"))
{
if(v.first == "id")
{
std::string szData = v.second.data();
CString sztemp;
sztemp.Format(_T("%S"), szData.c_str());
}
}
}