Hollow Cube (Not Tube Style)

[Gwydeon Nomad]

Hello Mesh folk.  I am trying to generate  a hollow cube, one that is evenly hollow so an avatar can stand inside.  

I have chosen the physics shape from the file.  I tried stopping and uploading after each of the physics setup steps in the upload panel. 

I made sure the "Close holes" button was not checked.  The preview looks like the model.

Thus far, no matter how I upload, Second Life interprets the physics as a solid cube.

I tried putting a hole from the interior hull to the exterior hull.  I tried a triangular hole by lopping off a corner of each and I tried leaving one whole side open with just a single edge along open side.

::frustrated builder noises::

Edited December 4, 2022 by Gwydeon Nomad

[Atomic Infinity]

When you have it in-world, what physics shape type is it?  like on the features tab in edit, to use your custom physics shape you have to set it to shape type : Prim

Setting as convex hull (the default) will tend to fill in the holes of a hollow mesh.

[Gwydeon Nomad]

That was the problem. Thank you ever so much.