title: not able to form post data for passing in extjs
body: <p>I have a strange problem with POST data, i have two conditions </p>
  
  <p>I had four input boxes with name</p>
  
  <pre><code>&lt;input name="a[]"&gt;&lt;input name="a[]"&gt;&lt;input name="a[]"&gt;&lt;input name="a[]"&gt;
  </code></pre>
  
  <p>and data is posted by method "&amp;a[]=12&amp;a[]=9&amp;a[]=12&amp;a[]=43".</p>
  
  <p>but when i am using extjs i am hanged if i do</p>
  
  <pre><code>store.load({params:{ 'a[]':12 ,'a[]':9 , 'a[]':12 , 'a[]':43      }});
  </code></pre>
  
  <p>this only a[]=43 reached to the post data and never to the another end , </p>
  
  <p>also if i do</p>
  
  <pre><code>store.load({params:{ a[]:12 ,a[]:9 , a[]:12 , a[]:43      }});
  </code></pre>
  
  <p>this is an error</p>
  
  <p>so please help to clear my concept</p>