Issue With Passing Data In Ajax Link

Hi i am trying to pass value to controller via ajaxlink and i am getting error 500 (internal server error)

does anyone know what is the issue? this is my code…


<?php

echo CHtml::ajaxLink(

  "OK",

  Yii::app()->createUrl( 'search/Providerresults') ,

  array( 

    'type' => 'POST',

	 'beforeSend' => 'function() { document.getElementById("forAjaxRefresh").innerHTML="loading..."}',

    'success' => 'function( data )

                  {document.getElementById("forAjaxRefresh").innerHTML=data;}',

    'data' => array( 

	'term' => 'js:$("#ServiceproviderForm_for").val()', 

	'near' => 'js:$("#ServiceproviderForm_near").val()',

	),

	

));

?>