How to use session-specific variables in Alexa Skills?
<p>I'm developing a fact skill for Alexa using their SpaceGeek template.
The template itself is very straight forward, but I'm trying to improve it by
making sure the facts used will not come up again in the same session.  So I
delete the element after it is used.  However, now it comes to a problem that, those elements deleted in the session won't even come up in future sessions.
So I assume the global variable stays in the backend and thus created a copy-array as below.  But it still won't work.  So after using all the facts once, I'll always get "That's all the facts we have for now".  Even if I start a new
session.  Any help will be appreciated.</p>

<pre><code>    function handleNewFactRequest(response) {
       var COPY_FACTS= SOME_FACTS.splice(0);
       if(COPY_FACTS.length&gt;0){
           var factIndex = Math.floor(Math.random() * COPY_FACTS.length);
           var fact = COPY_FACTS[factIndex];

           // Create speech output
           var speechOutput = "Here's your random fact: " + fact + " would you like more?";
           var repromptOutput = "would you like more random facts?";
           COPY_FACTS.splice(factIndex, 1);
           response.ask(speechOutput, repromptOutput);
      }else{
           var speechOutput = "That's all the facts we have for now.";
           response.tell(speechOutput);
      }
    }
</code></pre>