Thanks v. much Diki,

The user programs are something i confess i haven't exploited (even after 3 years - so far have got by saving regs to them and placing in MA without really understanding - it just works!) - have read up and digested a bit more this evening and now think it can handle my bass pedals / organ piston type setups too

Re: orgiinal Q - controlling midi expander - i see how to do this now - as you said - actually implementing it might be another matter - have to work out how to create a midi control message and save as midi file - presumably it can be done with sequencer somehow ?

This has got me interested me in the G70 - should last at least until the G80/Tyros3 hits the market !cool:

[This message has been edited by tony harbour (edited 02-26-2008).]