Classic 3D renderer options

In a comp viewer, the "Fast Previews" menu (the one that pops up when one clicks the "lightning" icon button at the bottom of the viewer) has an item (the last one) called Renderer Options.

If the current renderer is "Classic 3D" (the one i'm concerned with), there is one single option: set the "Shadow Map Resolution" to something else than "comp".

OK... now the question:

Is it possible to modify that option through script ?

Xavier