Previously, I could do $object('myExtenderProperties')._hide(); from client script to hide a ModalPopupExtender which had a ModalPopupProperties object with ID 'myExtenderProperties'.

I've just upgraded to beta 2, and $object no longer exists and neither do extenders have the properties collection anymore so I figure I should use the ID of the extender itself instead with $get?

But $get('myExtender') just returns null... what's the correct way to do this now?

Cheers,
Fredrik 

Hi,

what I suggest is setting the BehaviorID property of the extender and then using $find to retrieve the behavior instance. $find() accepts the id of a component and returns a reference to it. 

I cannot for the life of me get a handle on my modal?  Could you post your solution?