Ajax won't work if using multiple params
<p>This is my AJAX code:</p>

<pre><code>$.ajax({
        type: "POST", 
        url: "ajax.php", 
        data : params+'&amp;lakasid='+lakasid,
        dataType: "json",
</code></pre>

<p>This code works perfectly, but when I add one more parameter to  the data field, the request will not start.</p>

<p>Wrong code:</p>

<pre><code>$.ajax({
    type: "POST", 
    url: "ajax.php", 
    data : params+'&amp;lakasid='+lakasid+'&amp;action='+action,
    dataType: "json",
</code></pre>

<p>When I add action at the end, the code is not working.</p>

<p>What could be the problem?</p>

<p>Thanks in advance.</p>