Hello, I'm trying to extend the Exporter of OpenMesh to put another float stored at each Vertex to an off or obj file. But the Tutorial on your website dosn't make it clear i think. Do I have to extend the the BaseExporter by a Iterator for my float like: virtual PVertexIter const_myFloat_begin() = 0; virtual PVertexIter const_myFloat_end() = 0; Where do i have to add the code to get these iterators called? Is there anything else to add? Thanks in advance Malte