ay format for upper thumb value. Default to <code>%.0f</code> to display value as Int. Change this if you need to display decimal places or want a different label.</li>
<li><code>spacing</code> : vertical spacing between the labels and thumbs</li>
<li><code>thumbLabelStyle</code> : position of thumb labels. Set to STICKY to stick to left and right positions. Set to FOLLOW to follow left and right thumbs</li>
<li><code>gapBetweenThumbs</code> : minimum distance between thumbs</li>
</ul>

<p>To listen for val