Allow fields names to contain dashes. https://tracker.physiomeproject.org/show_bug.cgi?id=3920
Allow fields names to contain dashes. https://tracker.physiomeproject.org/show_bug.cgi?id=3920

OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc