Hello, My goal is to play a random audio file using the trigger function. If I call a.trigger() file a is played but if I would like to call a random file between (a - z) how would i do that ? I have do it this way :

1.  String[] audio = { "a", "b", "c" };
     int index = int(random(audio.length));
2. audio[index].trigger();

But the following error is returned : The function trigger() does not exist.

Below is the rest of my code and I am using analog inputs running on the Arduino in the Arduino environment to trigger this sketch in processing.

1. import processing.serial.*;
   import ddf.minim.*;
   
   AudioSample a;
   AudioSample b;
   AudioSample c;
   
   Minim minim;
   int linefeed = 10;
   Serial myPort;
   int sensorValue = 0;
   
   void setup()
   {
     println(Serial.list());
     myPort = new Serial(this, Serial.list()[1], 9600);
     minim = new Minim(this);
     a = minim.loadSample("yes.wav", 2048);
     b = minim.loadSample("no.wav", 2048);
     c = minim.loadSample("maybe.wav", 2048);
   }
   
   void draw()
   {
     String[] audio = { "a", "b", "c" };
     int index = int(random(audio.length));
     stroke(255);
    
     while (myPort.available() > 0)
      {
       String inBuffer = myPort.readString();  
       sensorValue  = int(trim(inBuffer));
       println(sensorValue);
                   if (sensorValue != 0 )
                    {
                      audio[index].trigger();
                      sensorValue=0;
                    } 
      }
   }

Thanks for your help!