Change button state from hardware


in blynk app i have a switch button, which is hooked up to a tag (15 devices).

how can i change the state of this button from hardware?

i have tried to send Blynk.virtualWrite(V0, 1); from one of the devices, but does not (always) works.


Hello. We actually do not support this as far as I remember.

any idea for workaround? maybe with api, or something?