Blinking led with ratio


it would be great to have a LED widget blink property, such as for example :

blynk.setproperty(V0, ‘period’, period)

with period = 0 no blinking (default) and period > 0 is blinking period in ms with 50% on/off ratio (default)

and :

blynk.setproperty(V0, ‘ratio’, ratio)

with on/off ratio from 0 to 100%

Thanks a lot