rectangle or box with modifiable height width and depth

[chickentree]

Is it possible to create an object that has modifiable height, width and depth ratios? The current objects allow resizing but only of the whole object, as far as I can tell there is no way to make something like a box which is a given height but wider or narrower the given box.

Such an object would be great for things like collision detection within objects.
As one example, having a parachutist land on the deck of the aircraft carrier is difficult because the deck is not an accessible subobject, but If I could create a box of the right size and overlay it on the carrier deck then I could use the new object to either direct an object to the deck or to determine if the object reached its goal.
I would be interested in other ways to accomplish something like this but the modifiable box is what comes to mind when I try to program a problem like this in Alice.

Mark