Quotation: Rendering of an FS_INDEX input component using $CMS_VALUE(...)$ is no longer supported and will cause generation warnings (“use of deprecated value generation method for an index editor”). Please always use $CMS_FOR(...)$ for the rendering (see FS_INDEX output example).
Solution: use $CMS_FOR(for_myEntry,st_myIndex.values)$...$CMS_END_FOR$ instead of $CMS_VALUE(st_myIndex)$