title: Problem with implementing paypal's Express checkout API?
body: <p>I'm doing e-commerce application, there m implementing paypal's Expresscheckout API for online shopping.I have created sandbox test account also. but if i call setexpresscheckout API I'm getting the order total missing error:</p>
  
  <p>Here is my code snippets</p>
  
  <pre><code>&lt;form method="post" action="https://api-3t.sandbox.paypal.com/nvp"&gt; 
  
  &lt;!-- UNPROTECTED VALUES. DO NOT USE IN PRODUCTION --&gt; 
  
  &lt;input type="hidden" name="USER" value="xxxxxxx.gmail.com"&gt; 
  &lt;input type="hidden" name="PWD" value="tttttttt"&gt; 
  &lt;input type="hidden" name="SIGNATURE" value="hidden"&gt; 
  &lt;input type="hidden" name="VERSION" value="50.0"&gt;
  &lt;input type="hidden" name="PAYMENTREQUEST_0_PAYMENTACTION" value="sale"&gt;
  &lt;input name="PAYMENTREQUEST_0_AMT" value=19.95"&gt;
  
  &lt;input type="hidden" name="RETURNURL" value="http://www.xyz.com/"&gt;
  &lt;input type="hidden" name="CANCELURL" value="http://www.xyz.com/"&gt;
  
  &lt;input type="hidden" name="PAYMENTREQUEST_0_CURRENCYCODE" value="USD"&gt; 
  &lt;input type="submit" name="METHOD" value="SetExpressCheckout"&gt;
  
  &lt;/form&gt;
  </code></pre>
  
  <p>If anybody knows how to solve this, please let me know.</p>