title: Ubercart custom price, multiply price by user entered value
body: <p>I have an ubercart product with multiple options that need to be charged per person.  I've created an attribute called <code>Number of People</code> with a select box for numbers 20-40.</p>
  
  <p>I need to multiply </p>
  
  <pre><code>(the price after the addition of the selected options) * Number of People
  </code></pre>
  
  <p>I am using Ubercart Custom Price which allows me to do the necessary math but I am not sure how to access the user selected value of <code>Number of People</code>.</p>
  
  <p>So basically I need:</p>
  
  <pre><code>$item-&gt;price = $item-&gt;price * ['number_of_people']
  </code></pre>
  
  <p>I don't see anyway to access the Number of People from the $item object. Any Ideas? Thanks</p>