Suprateks with Remote Owners - Help

i recently received my chardonnay, but i'm having difficulty teaching the supra remote's volume codes to my universal remote (home theater master mx-500). the mx-500 flashes "GOOD" so it says it has learned the codes, but when i try to use the mx-500 for volume control nothing happens. has anybody been successful in transferring the supra remote volume codes to another remote? thanks.

btw, the chardonnay sounds better than i could've ever imagined.