I need to get the default rotation of a SkBee structure, my code:

Code (Text):

1. on load:
2.   set {_s} to structure named "str"
3.   set {_l1} to location(-24,61,-285, world "world")
4.   set {_l2} to location(-19,56,-269, world "world")
5.   fill structure {_s} between {_l1} and {_l2}
6.   save structure {_s}

now, if I use it for the first time, it indeed provides me with the correct rotation, however, the next time, it remembers the rotation and doesn't use the first one

Code (Text):

1. on command "first":
2.   set {_s} to structure named "str"
3.   set rotation of structure {_s} to clockwise 90
4.   place structure {_s} at target block of player #is rotated
5.  
6. on command "second":
7.   set {_s} to structure named "str"
8.   place structure {_s} at target block of player #is rotated too! (it shouldn't be)

I've tried to `set rotation of structure {_s} to none` according to the docs but it doesn't work. Any idea why?