Add sound to this indicator

Hi,
I have attached indicator Outside bar indicator. I have tried to add sound alert to it but no success.

Where should I be adding sound alert? If someone could help would be much appreciated,

PG

Hi
This indicator draws the arrows in two different places.
First between lines 96 and 111
and then between 113 and 128
You could add your Alert(); line above the valid=0;

thank you

It does now alert but it is caught in an endless loop, is there a way to limit alert to just once.

this is what I added (above both valid=0)

Alert("New OB ");// Alert
valid = 0;

so now I am testing this

//============================================================
// Comparing LastActionTime with the current starting time for the candle.
if (LastActionTime != Time[0])
{
// Code to execute once per bar.
Print("This code is executed only once in the bar started ", Time[0]);

LastActionTime = Time[0];
}

//===========================================================
valid = 0;


thank you