This
"_Alert" indicator helper is great Apprentice, really useful for audio/email notifications (and I can see it's designed to work with many of your indicators).
One question: If we need to be notified about let's say 30 instruments, do we need to install it as a signal/strategy
only once ? (i.e. set it up for EUR/USD
only) and not 30 times (once for each instrument) and it will still give audio/email notifications on all its indicators
for all 30 instruments ? is that correct ?