SOLVED: ReSubmit form when DropDown change

hi, I have this in the form to resubmit the form when the combo changes.

<?php echo $form->dropDownList($pago, ‘alumno’,

		GxHtml::listDataEx(Alumno::model()-&gt;findAllAttributes(null, true, &#036;crit)), 


			//'onChange' =&gt; 'submit',


			'prompt' =&gt; Yii::t('app', 'Seleccione un Alumno'),

			)); ?&gt;

How can I be aware in the controller that is a re-submition?

If a resubmit occurs I have to clean some variables and do some stuff in the controller.

(like show another records in a grid, initalize counters, etc)

Best Regards


I didn’t read clientChange, and now I added “params” parameter.