character string

[admin]

Next firmware will have an option to hide day and/or seconds for data type 10 (3 byte time / day).

Dré's script is correct. string.format supports multiple arguments so the script can be shorter. There's no different in using single or double quotes in Lua.

Code:

value = event.getvalue()
time = string.format('%d:%02d:%02d', value.hour, value.min, value.sec)
log(time)