Use expressions

You can use SpEL to create expressions in Watson Conversation responses by using the following syntax . Now, you’ll use expressions to clean up the response.

1. In the #listparks node, change the response text to use the following SpEL expression:
   I can tell you about <? $parks ?>
2. Again, test the response of list parks in the Chat pane.
   Note that it behaves exactly the same. There is no change to the response.
3. Modify the response to use a join expression:
   I can tell you about <? $parks.join(', ') ?>
4. In the Chat pane, enter show me a list of parks.
   The response is now formatted nicely.