Hi
I've a problem whit "put" function. My simple code is:
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typedef Is_finite<Triangulation> Filter;
typedef boost::filtered_graph<Triangulation,Filter,Filter> Finite_triangulation;
typedef boost::graph_traits<Finite_triangulation>::vertex_descriptor vertex_descriptor;
typedef boost::graph_traits<Finite_triangulation>::vertex_iterator vertex_iterator;
typedef boost::graph_traits<Finite_triangulation>::edge_descriptor edge_descriptor;
typedef boost::graph_traits<Finite_triangulation>::edge_iterator edge_iterator;

int main(int,char*[])
{
Triangulation t;
Filter is_finite(t);
Finite_triangulation ft(t, is_finite, is_finite); //graph

t.insert(Point(0.4, 1));
t.insert(Point(1, 0.3));
t.insert(Point(0.0, -0.9));
t.insert(Point(-1, 0));
t.insert(Point(1, 2));

boost::property_map<Triangulation,boost::edge_weight_t>::type weight_map=get(boost::edge_weight,ft);

edge_iterator eit,eend;
for (boost::tie(eit,eend)=boost::edges(ft); eit!=eend; ++eit)
{
     std::cout << "PESO: " << get(weight_map,*eit) << "\n";
     put(weight_map,*eit ,100);
     std::cout << "PESO2: " << get(weight_map,*eit) << "\n";
}
return 0;
}
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at compile time I've: "/property_map.hpp:319: error: invalid lvalue in assignment"
Why get is right and put no??Can help me??

Best regards
-Bombielfil-