To interact with an Alert object you need to first hook or trap the Alert event. This is done by using the OmniPilot.OnAlert method and passing in the address of the method that contains the code you want to execute when an alert fires. The fired AlertObject and the SymbolObject the alert fired on will be passed into your calling method.

Example
Sub OnStartUp
StartOT
OmniPilot.OnAlert(AddressOf MyOnAlert)
End Sub

Private Sub MyOnAlert(ByVal oSymbol As SymbolObject, ByVal oAlert As AlertObject)
' Actions to take when an alert fires. Here you will have access to the SymbolObject that the alert fired on as well as the
AlertObject itself
End Sub

Also See
Events
Events.OnAlert