Is this what you are looking for?
Quote: "
MAKE OBJECT COLLISION BOX
This command will make an object use box collision. If a value of zero is specified for the flag value, the box will be deemed to be a
non-rotating box and able to generate sliding collision data using the GET OBJECT COLLISION X, Y and Z expressions. If the flag value is
one, the box is deemed to be a rotated-box and will provide more accurate collision feedback as the object rotates. Be aware that the
collision box you create is affected by the subsequent scaling of the object, and that when the object is rotated the fixed collision box
orientation remains unrotated to aid in the effect of sliding collision.
Syntax
MAKE OBJECT COLLISION BOX Object Number, X1, Y1, Z1, X2, Y2, Z2, Collision Flag
"
"Ok, so that wasn't funny. I don' have any good Christmas jokes."