Move the sides of a box inwards or outwards.

Input parameters:

1. Bx → Box to adjust
2. X- → Adjustment amount for the negative X face.
3. X+ → Adjustment amount for the positive X face.
4. Y- → Adjustment amount for the negative Y face.
5. Y+ → Adjustment amount for the positive Y face.
6. Z- → Adjustment amount for the negative Z face.
7. Z+ → Adjustment amount for the positive Z face.

Output parameters:

1. Bx → Box with adjusted sides.