UI slider; range with min and max

UI slider; range with min and max

I've a UI slider which includes a range. It's like:  http://jsfiddle.net/5nc60d7p/

But I want to include a startvalue to max so that it's clear that it's a range.

I can't add a max at this moment because of the
  1.  max: sliderAmountMap.length-1, 
How can I do this?