Hi,

I'm not quite understanding what you are trying to do.

Are you sending MIDI Control Change Values according to the MIDI implementation chart in the DT50 User guide?

http://line6.com/data/6/0a060b316ac34f059348b7e6f/application/pdf/DT50%20Quick%20Start%20Guide%20-%20English%20%28%20Rev%20C%20%29.pdf

Very last page.

Is the issue that the G-System uses Program Changes only for certain parameters?

BTW, there is no facility to control EVERY parameter on the amp via MIDI.

Controllable parameters:

Channel A/B Toggle

Channel A Voicing (I, II, III, IV)

Channel A Operation Class Configuration (Class A / Class AB)

Channel A Power Tube Configuration (Pentode/Triode)

Channel A Reverb On/Off

Channel B Voicing (I, II, III, IV)

Channel B Operation Class Configuration (Class A / Class AB)

Channel B Power Tube Configuration (Pentode/Triode)

Channel B Reverb On/Off

If you would like more options you could put in a feature request:

http://line6.com/company/contact/customer_feedback/

Thanks,

David

Line 6 Customer Support