Not sure what's going on there, fluxor. My first inclination was to ask if you were using a German speech engine, but you had mentioned that values over 20 work fine. The speech engine is being fed (in your case) 1 through 100 the same way regardless of language (that is, there is no special handling for English/German/Spanish/etc.). I'll keep my eye open to see if there is a fix somehow. Thank you for bringing it to my attention!