Not possible to bind enabled/visible to an observable?

[kleist]

Before kendo.ui.Button was available, one could bind a button to an observable like so (binding "enabled" didn't work though):

<a id='add-button'
   class='k-button'
   data-bind='click: add, visible: isAddButtonVisible'
   >ADD</a>

Now with the new Button neither "visible" nor "enabled" can be bound, it seems. One has to resort to the enable() method? And as for visibility, bad luck?

Hopefully I've misunderstood something...

[kleist]

Ah - never mind: found the MVVM example here: http://demos.kendoui.com/web/button/mvvm.html

Will try to add this...

    data-role="button"

... which wasn't needed before.