I have a PropertyGroup Class called PPP, like the Collection Example on this page: http://www.blender.org/documentation/blender_python_api_2_63_release/bpy.props.html
The problem is that one of the properties in the PPP class, pfloat calls an update function "update_func"
I need to be able to tell which ppp has been changed when the update_func is called, normally you would use self to determine it but that does not seem to work it just returns: PPP("")
Any Ideas / what am I doing wrong?