Set current message
spinner.Message("Current message")
Hide message element
spinner.Message("")
Set current progress value 0..1
spinner.Progress(0.511) // 51.1% (depends on ProgressIndicatorFormat option)
Hide progress element
spinner.Progress(0)
Note: shown progress value depends on
ProgressIndicatorFormat
option, default is "%0.f%%" and shows70%
, for value0.705