Hi, I do not know the program you use, but I have been using MidiOx (www.midiox.com) and it's been working great for me. You do not have to customize it, just run with the default settings and the sysex will get into your poly within a few seconds. Try it.
regards
gupidziadek
> so far I am having no luck when trying to send Sysex to my Poly