[pluggo] Great Limitations in Digital Performer and Midi Control?

Thank you for your help...

I use Digital Perfomer in my editing and mixing sessions, i would like to use some powerful MAX patches via PLUGGO wich transforms audio signal and are controlled by MIDI cc's.
I have this problem: DIGITAL PERFORMER don't seems to send any midi to a plugin inserted in an audio track (simply the plugin name doesn't appear in the midi out list of any midi track)but it only receives audio stream.

If (using the "#C synth;" tag  in pluginconfig) i create a synth instruments, it can receive midi data, but it cannot receive directly any audio stream by a track.

is it a limitation of DP or is possible to workaround using BUS send and receive?