Hi all, I'm trying to create a Sysex Fader object that will tell my Proteus 2000 to change it's arpeggiator mode. I downloaded the sysex docs from EMU and tried to follow them, but got nowhere. According to their docs, the parameter edit commands follow this format. EXAMPLE:> {F0h, 18h, 0Fh, dd, 55h, 01h, 02h, <xx, xx, yy, yy>, F7h} F0h = sysex message 18h = EMU ID 0Fh = Proteus ID dd = Device ID 55h = Special Editor designator byte 01h = Command::Parameter Value Edit 02h = Byte count(number of Byte pairs) {xx, xx} = Parameter ID (LSB first) {yy, yy} = Parameter Data F7h = EOX And the parameter id is... id = 134 (06h,01h) min = -2; max = 1 -2 = off -1 = on 0 = P (Preset Arp) 1 = G (Global Arp) I can't figure out where to put the paramater id. I've followed the above format, but it doesn't seem to work - apart from the MIDI receive LED on the Proteus flashing to show it's getting something. Can anyone give me some hints? If you need more info just ask. I'm happy to deal with this off list if the moderators feel it's off topic. Cheers, Andy M.