Hi All
I tried to use mphx command without success
: attempt to index global 'mc' (a nil value)
The error message means that 'mc' is not defined, presumably meaning that you have not loaded the multicam module.
Multicam is not loaded by default. If you are using it, you'd typically start with something like
!mc=require'multicam'
!mc:connect()
!mc:start()
See the source for more information.