[boost] How to manage Graph Property ?

Hi everyone, I really need help to figure out the following problem. -------------------------------------------------------------------------------- First, I create a Vertex Property: typedef property < vertex_index_t, int> VertexProperties; Then, I create an adjacency graph type: typedef adjacency_list < vecS, vecS, directedS, VertexProperties > Graph; Now I can call: VertexProperties V1; --------------------------------------------------------------------------------- My question is: Is there anyway that I can access *VertexProperties *through * Graph* to create the same variable *V1* ?. Thanks, in advance, for your time. I appreciate all suggestions, Tri Nguyen.