php - Captcha mage doesn't change after click YII1 -

i need change captcha image when click on it, captcha form located in cjuidialog.also form loaded via ajax in view set:

 <?php $this->widget('ccaptcha', array('clickableimage' => true,'showrefreshbutton'=>false,'captchaaction'=>'/site/captcha')); ?> 

but when click on image not change.tell me please wrong?

just add id in widget:

   <?php $this->widget('ccaptcha', array('id'=>'captahca_id','clickableimage' => true,'showrefreshbutton'=>false,'captchaaction'=>'captcha')); ?>