you've been good !
It works well !
although I'd like to know how to do the same thing using vla-add3dmesh !
I noticed that in Bricscad, vla-add3dmesh more or less, it works.
Something must be done to add the top and bottom squares to the cube.
While in Acad with vla-add3dmesh, the result is very strange !
I saw DXF codes 71, 72, 73 and 74 ... !
Which are different on each staff . . .
What do they mean?