Store and increment a session variable

index.js

app.handle('loop_handle', (conv) => {
  
  var response = "";
    
  var loopCounter = conv.user.params.counter;

  if (loopCounter > 0) {
    loopCounter += 1;
  } else {
    loopCounter = 1;
  }
  
  conv.user.params.counter = loopCounter;
  
  response += "Loop counter equals " + loopCounter + ". ";
  
  conv.add(response);

});