[Boost-users] Problem with graph:johnson_all_pairs_shortest_paths

I am using g++ 3.2 on a redhat linux system. I took the johnson_all_pairs_shortest_paths example, (http://www.boost.org/libs/graph/example/johnson-eg.cpp) which works fine, but then changed const int V = 5; to const int V = n; where n has been computed at runtime. This should not change the type of V or D, but I now get the error below. Can anyone explain how to fix this? Thanks, Keith

/usr/bin/g++ -I ~/boost_1_32_0/ graph_stats.cc graph_stats.cc: In function `int main()': graph_stats.cc:46: no matching function for call to ` johnson_all_pairs_shortest_paths(main()::Graph&, int[V][V], boost::bgl_named_params )'