Code:
command admin_setstructure [<text>] [<num>] [<num>] [<num>] [<num>] [<num>] [<num>]:
permission: "*"
trigger:
set {_s} to structure named arg-1
set {_l1} to location(arg-2,arg-3,arg-4,"spawn")
set {_l2} to location(arg-5,arg-6,arg-7,"spawn")
fill structure {_s} between {_l1} and {_l2}
save structure {_s}