I am trying to return a value extracted from within a .then call in a javascript function (please excuse me if I'm using the incorrect terminology, and please correct me so I can learn). Here is the code that I am working with

```
function analyzeSentimentOfText (text) {
  // [START language_sentiment_string]
  // Imports the Google Cloud client library
  const Language = require('@google-cloud/language');
  // Instantiates a client
  const language = Language();

  // The text to analyze, e.g. "Hello, world!"
  // const text = 'Hello, world!';

  const document = {
    'content': text,
    type: 'PLAIN_TEXT'
  };

  // Detects the sentiment of the document
  language.analyzeSentiment({ document: document }) 

    .then((results) => {
      const sentiment = results[0].documentSentiment;

      console.log(`Document sentiment:`);
      console.log(`  Score: ${sentiment.score}`);
      console.log(`  Magnitude: ${sentiment.magnitude}`);

    })
    .catch((err) => {
      console.error('ERROR:', err);
    });
  // [END language_sentiment_string]
}

```

What I want to accomplish is extract the sentiment score (and ideally also the magnitude) for results[0].documentSentiment.sentiment.score.

What I've tried to do is this

```
function analyzeSentimentOfText (text) {

  const Language = require('@google-cloud/language');
  const language = Language();
  const document = {
    'content': text,
    type: 'PLAIN_TEXT'
  };

  language.analyzeSentiment({ document: document }) 

    .then((results) => {
      const sentiment = results[0].documentSentiment;
      return sentiment.score;
    })
    .catch((err) => {
      console.error('ERROR:', err);
    });
  // [END language_sentiment_string]
}

```

Can anyone help me out? Or do I have to totally change the approach? 

Thanks,
Brad