CHtml $scenario question

How to set CHtml $scenario for use in active* methods?

For example: <?php activeLabelEx($model, 'content') ?>

Validation scenario defined in model: array('content','required','on'=>'insert')

As of 1.0.4, you can set the "scenario" property of your model instance.

You can also set CHtml::$scenario='insert'.

Very thanks, Yii is great.