"In version 0.99.6884, membrane animations do not work."
What do you mean: all those linked Bessel animations don't work [1 year old]
from the Smath Matlab library mwbesselj(N,x) ? Is that so ?
Does it mean part or all mwXXX library 6884 is zap ?
That would a damned bug. All my Fourier documents would be red by switching 6179 => 6884

Matlab functions work only for 32-bit version of SMath Studio. You can use Cephes Math Library.

"What do you mean: all those linked Bessel animations don't work [1 year old]
from the Smath Matlab library mwbesselj(N,x) ? Is that so ?"
Uni, the problem with the Bessel function is not related. The problem is in
the F (u, v) function that CreateMesh uses.Look at the attached file

https://en.smath.com/forum/resource.ashx?a=15089&b=2

In the function F (u, v) for animation, I used not two, but four arguments F (u, v, t, delta).
The problem is that the latest version does not allow increasing the number of arguments above two.

Wrote

In the function F (u, v) for animation, I used not two, but four arguments F (u, v, t, delta).
The problem is that the latest version does not allow increasing the number of arguments above two.

OK, it concerns the very latest version, Thanks

Wrote

In the function F (u, v) for animation, I used not two, but four arguments F (u, v, t, delta).
The problem is that the latest version does not allow increasing the number of arguments above two.

Plugin updated. Try now.

The membrane sheet does not work online also!

Wrote

The membrane sheet does not work online also !

Update as advised by Viacheslav.
What do you mean does not evaluate on-line ?
It evaluates the work sheet.