Advanced region market Api

I am looking for a plugin that can unsell a players region by its name.
Example i have a prison server and people rank up on a sign in spawn. I want a command that i can write on the sign and then the command sell all the regions by the players name.
I talked with owner of the plugin and he said that it would be simple to make it. He also send me this he thought i should put in here
Features
A permission

List<Region> regions = AdvancedRegionMarket.getInstance().getRegionManager().getRegionsByOwner(PLAYER UUID HERE);

for(Region region : regions) {
region.unsell(ActionReason.NONE, false);
}