Can anyone please add alarm to this bull/bear indicator?

Hello... I am requesting help. The following is basically a bear/bull indicator. Can anyone please add an alarm (and also have an option to send an email with the alarm) to this indicator? Basically when the color changes which is the same as when the zero line is crossed. I would greatly appreciate it. Thanks in advance friends!

Oh yeah... also the alarm needs to be after the current bar of the color change closes. A sound alarm too would be nice but not necessary.

I think you can add something to it but the I'm not just sure about it. Try looking for some other information regarding it and if ever I found one I will immediately let you know.