script for changing icons of LC widget "Segmented Controls"?

[Nicolas Cueto]

​In case the subject line is not clear enough...

LC widgets include a choice of icons (for the "Segmented Controls" widget
these range alphabetically from "adjust" to "youtube"), and these icons can
be selected/changed through the "Object inspector".

But, how can the icon be changed from a script?

The only reference I could find in the LC Forum (nothing in the LC8.1
dictionary) was to "navicon". But, no luck.

Thanks.

--
Nicolas Cueto