ionic ion-item option-buttons for swipe not reload the updated buttons

I have one problem with Ionic framework("version": "1.0.0-beta.1"), when I modify the Item I want to be able to modify the buttons related to the item swipe. The scenario is : swipe on item, view a list of buttons [open,modify,close]. WHen i Click on Close I want to modify the option-buttons of Item with only the button [reopen]. It is possible in the controller change the option-buttons? I have tried but the framework not reload the related buttons. Do you have any hint?

Thank you

I have opened a discussion for that in ionic forum. ANd the solution is come from the new version.

Here is the example of new sintax.