Uhm

command /claim [<number>,<number>]:
    trigger:
        set {_player} to "%player%"
        set {_name} to "%{player.team.name}%%{name.team.claims}%"
        set {_loc} to player's location
        set {_x} to ceil(x coord of {_loc})
        set {_y} to ceil(y coord of {_loc})
        if arg 1 is not set:
            set {_x1} to 16
        else:
            set {_x1} to ceil(arg 1 / 1)
        if arg 2 is not set:
            set {_z1} to 16
        else:
            set {_z1} to ceil(arg 2 / 1)
        set {_x_nw} to {_x} - {_x1}
        set {_z_nw} to {_z} - {_z1}
        set {_x_se} to {_x} + {_x1}
        set {_z_se} to {_z} + {_z1}
        set {_y_se} to 255
        set {_pos_nw} to "%{_x_nw}%,%{_y_nw}%,%{_z_nw}%"
        set {_pos_se} to "%{_x_se}%,%{_y_se}%,%{_z_se}%"
        set {thing} to "%{name.team.claims}%"
        set {hi} to 1
        set {name.team.claims} to {thing} + {hi}
        execute console command "/pex user %{_player}% add worldedit.selection.pos"
        execute console command "/pex user %{_player}% add worldguard.region.claim"
        execute console command "/pex user %{_player}% add worldguard.region.addmember.*"
        make command sender execute "//pos1 %{_pos_nw}%"
        make command sender execute "//pos2 %{_pos_se}%"
        make command sender execute "/rg claim %{_name}%"
        loop all players:
            if {loop-player.team.name} = {_player.team.name}:
                set {member} to loop-player
                make command sender execute "/rg addmember %{member}%"