BoundingBox problem

hello, i’ve got a problem with the rs.boundingbox():

I’ve a rectangle on the WorldCPlane, but my script doesn’t calculate the good bounding box:

normaly the value of bbox[0] must be the value of bbox[4],
and bbox[2] must be bbox[6]

i use these values to addpoint, ok…

and when I control points coordinates, it’s good construction:

Ok, I found something,

in the command rs.WindowPick it change the value of corner1 and 2… why, i don’t know…