I need an alert added to the code

If somebody could be kind enough and have the time, I only need an alert added to this indicator when it gives buy or sell signal.
I don't need anything changed, only an alert added, so I can hear it from anywhere in the house.

This is not my indicator, and I have no idea who wrote it.

Should work, not tested thoroughly

Alerts added for buy and sell . . Alert Once at start of Bar.

Be Advised indicator repaints and so alert will reappear on new bar

cheers

Thanks man - you're a legend!