command /fill-westDepend <integer> <integer> <integer> <integer> <integer> <integer> <string>:
    permission: op
    trigger:
        loop blocks within location at (arg-1, arg-2, arg-3) in world "world" and location at (arg-4, arg-5, arg-6) in world "world":
            loop-block is air
            block 1 meters west of loop-block is arg-7 parsed as itemtype
            set loop-block to arg-7 parsed as itemtype
        loop blocks within location at (arg-1, arg-2, arg-3) in world "world" and location at (arg-4, arg-5, arg-6) in world "world":
            loop-block is not arg-7 parsed as itemtype
            set loop-block to air