sayMessageTo script help

[salmo]

Trying to send radio voice (saygroup) messages to each person in a given army. Code has no compile errors but doesn't voice to players? Any help appreciated.

    private void sayMessageTo(int army, string msg)
    {   // send a speech message to all players in specified army (1=red; 2=blue)
        foreach (AiAirGroup g in GamePlay.gpAirGroups(army))
        {
            bool SaidToGroup = false;
            foreach (AiAircraft a in g.candidates())
            {
                if (SaidToGroup == true) return; // speech already said to group
                SaidToGroup = true;
                a.SayToGroup(a.AirGroup(), "Received_and_understood_Villa_Leader");  // for testing only
                //a.SayToGroup(a.AirGroup(), msg);
            }
        }
    }