title: Magento, How to change product price in view page?
body: <p>In Magento product view page, </p>
  
  <p>I need to call 3rd party API with product option to get product price,
  and I need to change the product price dynamically.</p>
  
  <p>How can I update the product price in view page so that I can pass right price to cart?</p>
  
  <p>I tried adding this input tag in options.phtml,</p>
  
  <pre><code>&lt;input type='text' name='price' value='999' /&gt;
  </code></pre>
  
  <p>and I click 'Add to cart' button, but the price is not changed in cart page.</p>
  
  <p>please advise me,</p>