Cant seem to get the taxonomy term included in breadcrumb trail

I have a data type called projects and a taxonomy vocab called Project Types which contain things like commerical, residential etc. The breadcrumb structure I want to have is

Home > projects > Commercial > project name

Thus I setup breadcrumb such as Projects and set the name to projects and the path to node/%projtype/%name (I am new to breadcrumbs but presumed I would need to have %projtype and %name to substitute the taxonomy term and name accordingly.

For arguments I then have projtype context assigned to taxonomy term id and name set to node:id

Selection rules node:id is of node type project

breadcrumbs I have link title and link path as follows

Projects projects
%projtype %projtype:url
%name:title

This however doesnt seem to be working. Please could anyone advise where I am going wrong

Thanks

Nick