code></pre>
<p>And it still works with multiple data points. It’s great! Isn’t it? <br>
    But what if I want to add a horizontal line to chart to create for example warning level, which of it is exceeded it
    could be dangerous?</p>
<hr>
<h3>Level range line</h3>
<p>Ok let’s consider this one:</p>
<pre><code>&lt;div id=&quot;chart-line-0&quot; point-id=&quot;[dataPointID]&quot; range-value=&quot;100&quot; range-color=&quot;#FF0000&quot; range-label=&quot;boiling&quot;/&gt;
</code></pre>
<p>Now we 