including pokemon TCG online username in gaming information

so, i'm getting into the pokemon TCG and play online, i figured i would edit my user name for it into my profile but i'm not seeing a slot for it, not so much a necessity, i could just VM someone my name but still, would be a nice touch, not sure how hard it would be to do so i won't argue too much for it but i'm sure some people would like it.

EDIT: ok, so i guess that was a little confusing, i'm just suggesting a slot in "gaming information" section of the profile for the TCG online, i would never change my username by the way.